31300131242 has 16 divisors (see below), whose sum is σ = 47920212360. Its totient is φ = 15327766272.

The previous prime is 31300131211. The next prime is 31300131257. The reversal of 31300131242 is 24213100313.

It can be written as a sum of positive squares in 4 ways, for example, as 29309097601 + 1991033641 = 171199^2 + 44621^2 .

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, 199163 + ... + 319790.

Almost surely, 2^31300131242 is an apocalyptic number.

31300131242 is a deficient number, since it is larger than the sum of its proper divisors (16620081118).

31300131242 is a wasteful number, since it uses less digits than its factorization.

31300131242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519577.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31300131242 its reverse (24213100313), we get a palindrome (55513231555).

The spelling of 31300131242 in words is "thirty-one billion, three hundred million, one hundred thirty-one thousand, two hundred forty-two".