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1213231311010 = 25121323131101
BaseRepresentation
bin10001101001111010001…
…110001010100010100010
311021222120011202100111101
4101221322032022202202
5124334144203423020
62325203433305014
7153440000663545
oct21517216124242
94258504670441
101213231311010
1142858a49a974
1217717086516a
138a53a887614
1442a138a685c
152185b5ce00a
hex11a7a38a8a2

1213231311010 has 8 divisors (see below), whose sum is σ = 2183816359836. Its totient is φ = 485292524400.

The previous prime is 1213231310989. The next prime is 1213231311031. The reversal of 1213231311010 is 101131323121.

It is an interprime number because it is at equal distance from previous prime (1213231310989) and next prime (1213231311031).

It can be written as a sum of positive squares in 2 ways, for example, as 1191291480369 + 21939830641 = 1091463^2 + 148121^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60661565541 + ... + 60661565560.

Almost surely, 21213231311010 is an apocalyptic number.

1213231311010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213231311010 is a deficient number, since it is larger than the sum of its proper divisors (970585048826).

1213231311010 is a wasteful number, since it uses less digits than its factorization.

1213231311010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121323131108.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1213231311010 its reverse (101131323121), we get a palindrome (1314362634131).

The spelling of 1213231311010 in words is "one trillion, two hundred thirteen billion, two hundred thirty-one million, three hundred eleven thousand, ten".

Divisors: 1 2 5 10 121323131101 242646262202 606615655505 1213231311010