1031311201232 has 80 divisors (see below), whose sum is σ = 2234779673280. Its totient is φ = 457980880896.

The previous prime is 1031311201223. The next prime is 1031311201237. The reversal of 1031311201232 is 2321021131301.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031311201237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261257 + ... + 1459752.

It is an arithmetic number, because the mean of its divisors is an integer number (27934745916).

Almost surely, 2^{1031311201232} is an apocalyptic number.

It is an amenable number.

1031311201232 is an abundant number, since it is smaller than the sum of its proper divisors (1203468472048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031311201232 is a wasteful number, since it uses less digits than its factorization.

1031311201232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721140 (or 1721134 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1031311201232 its reverse (2321021131301), we get a palindrome (3352332332533).

The spelling of 1031311201232 in words is "one trillion, thirty-one billion, three hundred eleven million, two hundred one thousand, two hundred thirty-two".