31211031130 has 8 divisors (see below), whose sum is σ = 56179856052. Its totient is φ = 12484412448.

The previous prime is 31211031113. The next prime is 31211031133. The reversal of 31211031130 is 3113011213.

It can be written as a sum of positive squares in 2 ways, for example, as 29588472169 + 1622558961 = 172013^2 + 40281^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31211031133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1560551547 + ... + 1560551566.

Almost surely, 2^31211031130 is an apocalyptic number.

31211031130 is a deficient number, since it is larger than the sum of its proper divisors (24968824922).

31211031130 is a wasteful number, since it uses less digits than its factorization.

31211031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121103120.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31211031130 its reverse (3113011213), we get a palindrome (34324042343).

The spelling of 31211031130 in words is "thirty-one billion, two hundred eleven million, thirty-one thousand, one hundred thirty".