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1213133202131 = 31118393305459
BaseRepresentation
bin10001101001110100010…
…111111010001011010011
311021222022100010220102012
4101221310113322023103
5124333444044432011
62325150010413135
7153434400036044
oct21516427721323
94258270126365
101213133202131
1142853a080254
12177143a311ab
138a523456826
1442a048488cb
1521852b9ea8b
hex11a745fa2d3

1213133202131 has 8 divisors (see below), whose sum is σ = 1252372684800. Its totient is φ = 1173900354120.

The previous prime is 1213133202121. The next prime is 1213133202257. The reversal of 1213133202131 is 1312023313121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213133202131 - 218 = 1213132939987 is a prime.

It is a super-2 number, since 2×12131332021312 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213133202097 and 1213133202106.

It is not an unprimeable number, because it can be changed into a prime (1213133202121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285721 + ... + 2019738.

It is an arithmetic number, because the mean of its divisors is an integer number (156546585600).

Almost surely, 21213133202131 is an apocalyptic number.

1213133202131 is a deficient number, since it is larger than the sum of its proper divisors (39239482669).

1213133202131 is a wasteful number, since it uses less digits than its factorization.

1213133202131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317329.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1213133202131 its reverse (1312023313121), we get a palindrome (2525156515252).

The spelling of 1213133202131 in words is "one trillion, two hundred thirteen billion, one hundred thirty-three million, two hundred two thousand, one hundred thirty-one".

Divisors: 1 31 11839 367009 3305459 102469229 39133329101 1213133202131