31023123201102 has 32 divisors (see below), whose sum is σ = 63159973351200. Its totient is φ = 10155939131520.

The previous prime is 31023123201101. The next prime is 31023123201247. The reversal of 31023123201102 is 20110232132013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023123201101) 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, 64663477 + ... + 65141472.

It is an arithmetic number, because the mean of its divisors is an integer number (1973749167225).

Almost surely, 2^{31023123201102} is an apocalyptic number.

31023123201102 is an abundant number, since it is smaller than the sum of its proper divisors (32136850150098).

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

31023123201102 is a wasteful number, since it uses less digits than its factorization.

31023123201102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129805668.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31023123201102 its reverse (20110232132013), we get a palindrome (51133355333115).

The spelling of 31023123201102 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-three million, two hundred one thousand, one hundred two".