31012311102 has 32 divisors (see below), whose sum is σ = 64668672000. Its totient is φ = 9902376288.

The previous prime is 31012311101. The next prime is 31012311107. The reversal of 31012311102 is 20111321013.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012311101) 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, 679602 + ... + 723797.

It is an arithmetic number, because the mean of its divisors is an integer number (2020896000).

Almost surely, 2^31012311102 is an apocalyptic number.

31012311102 is an abundant number, since it is smaller than the sum of its proper divisors (33656360898).

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

31012311102 is a wasteful number, since it uses less digits than its factorization.

31012311102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403560.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31012311102 its reverse (20111321013), we get a palindrome (51123632115).

The spelling of 31012311102 in words is "thirty-one billion, twelve million, three hundred eleven thousand, one hundred two".