31123051275 has 12 divisors (see below), whose sum is σ = 51456778232. Its totient is φ = 16598960640.

The previous prime is 31123051261. The next prime is 31123051277. The reversal of 31123051275 is 57215032113.

It is not a de Polignac number, because 31123051275 - 2⁴ = 31123051259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31123051277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207486934 + ... + 207487083.

Almost surely, 2^31123051275 is an apocalyptic number.

31123051275 is a deficient number, since it is larger than the sum of its proper divisors (20333726957).

31123051275 is a wasteful number, since it uses less digits than its factorization.

31123051275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414974030 (or 414974025 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

Adding to 31123051275 its reverse (57215032113), we get a palindrome (88338083388).

The spelling of 31123051275 in words is "thirty-one billion, one hundred twenty-three million, fifty-one thousand, two hundred seventy-five".