31020123230202 has 16 divisors (see below), whose sum is σ = 62042415815520. Its totient is φ = 10339679517552.

The previous prime is 31020123230171. The next prime is 31020123230209. The reversal of 31020123230202 is 20203232102013.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31020123230209) 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, 90203877 + ... + 90547112.

It is an arithmetic number, because the mean of its divisors is an integer number (3877650988470).

Almost surely, 2^{31020123230202} is an apocalyptic number.

31020123230202 is an abundant number, since it is smaller than the sum of its proper divisors (31022292585318).

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

31020123230202 is a wasteful number, since it uses less digits than its factorization.

31020123230202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180779597.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31020123230202 its reverse (20203232102013), we get a palindrome (51223355332215).

The spelling of 31020123230202 in words is "thirty-one trillion, twenty billion, one hundred twenty-three million, two hundred thirty thousand, two hundred two".