31231233203122 has 16 divisors (see below), whose sum is σ = 47483085691800. Its totient is φ = 15404789174400.

The previous prime is 31231233203089. The next prime is 31231233203143. The reversal of 31231233203122 is 22130233213213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27875665027081 + 3355568176041 = 5279741^2 + 1831821^2 .

It is a super-2 number, since 2×31231233203122² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312750379 + ... + 312850222.

Almost surely, 2^{31231233203122} is an apocalyptic number.

31231233203122 is a deficient number, since it is larger than the sum of its proper divisors (16251852488678).

31231233203122 is a wasteful number, since it uses less digits than its factorization.

31231233203122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625600941.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31231233203122 its reverse (22130233213213), we get a palindrome (53361466416335).

The spelling of 31231233203122 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred thirty-three million, two hundred three thousand, one hundred twenty-two".