31121310434 has 8 divisors (see below), whose sum is σ = 46713490668. Its totient is φ = 15550146880.

The previous prime is 31121310413. The next prime is 31121310443. The reversal of 31121310434 is 43401312113.

It can be written as a sum of positive squares in 2 ways, for example, as 31041154225 + 80156209 = 176185^2 + 8953^2 .

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

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, 5250467 + ... + 5256390.

Almost surely, 2^31121310434 is an apocalyptic number.

31121310434 is a deficient number, since it is larger than the sum of its proper divisors (15592180234).

31121310434 is a wasteful number, since it uses less digits than its factorization.

31121310434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10508340.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31121310434 its reverse (43401312113), we get a palindrome (74522622547).

The spelling of 31121310434 in words is "thirty-one billion, one hundred twenty-one million, three hundred ten thousand, four hundred thirty-four".