3131222252042 has 8 divisors (see below), whose sum is σ = 4738398275556. Its totient is φ = 1551756160192.

The previous prime is 3131222251991. The next prime is 3131222252089. The reversal of 3131222252042 is 2402522221313.

It can be written as a sum of positive squares in 2 ways, for example, as 2583191487361 + 548030764681 = 1607231^2 + 740291^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3131222251996 and 3131222252014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6927482633 + ... + 6927483084.

Almost surely, 2^{3131222252042} is an apocalyptic number.

3131222252042 is a deficient number, since it is larger than the sum of its proper divisors (1607176023514).

3131222252042 is a wasteful number, since it uses less digits than its factorization.

3131222252042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13854965832.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 3131222252042 its reverse (2402522221313), we get a palindrome (5533744473355).

The spelling of 3131222252042 in words is "three trillion, one hundred thirty-one billion, two hundred twenty-two million, two hundred fifty-two thousand, forty-two".