21030233031131 has 8 divisors (see below), whose sum is σ = 22277331404064. Its totient is φ = 19784248640640.

The previous prime is 21030233031127. The next prime is 21030233031139. The reversal of 21030233031131 is 13113033203012.

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 21030233031131 - 2² = 21030233031127 is a prime.

It is a super-2 number, since 2×21030233031131² (a number of 27 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 = 21030233031097 and 21030233031106.

It is not an unprimeable number, because it can be changed into a prime (21030233031139) 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, 278456735 + ... + 278532248.

It is an arithmetic number, because the mean of its divisors is an integer number (2784666425508).

Almost surely, 2^{21030233031131} is an apocalyptic number.

21030233031131 is a deficient number, since it is larger than the sum of its proper divisors (1247098372933).

21030233031131 is a wasteful number, since it uses less digits than its factorization.

21030233031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556991221.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21030233031131 its reverse (13113033203012), we get a palindrome (34143266234143).

The spelling of 21030233031131 in words is "twenty-one trillion, thirty billion, two hundred thirty-three million, thirty-one thousand, one hundred thirty-one".