31001321103132 has 48 divisors (see below), whose sum is σ = 73197035235072. Its totient is φ = 10211380650240.

The previous prime is 31001321103091. The next prime is 31001321103139. The reversal of 31001321103132 is 23130112310013.

It is a happy number.

It is a super-2 number, since 2×31001321103132² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31001321103099 and 31001321103108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31001321103139) 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, 34086408 + ... + 34984079.

It is an arithmetic number, because the mean of its divisors is an integer number (1524938234064).

Almost surely, 2^{31001321103132} is an apocalyptic number.

It is an amenable number.

31001321103132 is an abundant number, since it is smaller than the sum of its proper divisors (42195714131940).

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

31001321103132 is a wasteful number, since it uses less digits than its factorization.

31001321103132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69070938 (or 69070936 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31001321103132 its reverse (23130112310013), we get a palindrome (54131433413145).

The spelling of 31001321103132 in words is "thirty-one trillion, one billion, three hundred twenty-one million, one hundred three thousand, one hundred thirty-two".