31203203131122 has 32 divisors (see below), whose sum is σ = 68101078074624. Its totient is φ = 9452549134800.

The previous prime is 31203203131109. The next prime is 31203203131141. The reversal of 31203203131122 is 22113130230213.

It is a junction number, because it is equal to n+sod(n) for n = 31203203131092 and 31203203131101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73962204 + ... + 74382887.

It is an arithmetic number, because the mean of its divisors is an integer number (2128158689832).

Almost surely, 2^{31203203131122} is an apocalyptic number.

31203203131122 is an abundant number, since it is smaller than the sum of its proper divisors (36897874943502).

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

31203203131122 is a wasteful number, since it uses less digits than its factorization.

31203203131122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148348294.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31203203131122 its reverse (22113130230213), we get a palindrome (53316333361335).

The spelling of 31203203131122 in words is "thirty-one trillion, two hundred three billion, two hundred three million, one hundred thirty-one thousand, one hundred twenty-two".