31572126231 has 8 divisors (see below), whose sum is σ = 42252660720. Its totient is φ = 20969837952.

The previous prime is 31572126161. The next prime is 31572126241. The reversal of 31572126231 is 13262127513.

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

It is not a de Polignac number, because 31572126231 - 2³⁰ = 30498384407 is a prime.

It is a super-2 number, since 2×31572126231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31572126192 and 31572126201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31572126241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19560610 + ... + 19562223.

It is an arithmetic number, because the mean of its divisors is an integer number (5281582590).

Almost surely, 2^31572126231 is an apocalyptic number.

31572126231 is a deficient number, since it is larger than the sum of its proper divisors (10680534489).

31572126231 is a wasteful number, since it uses less digits than its factorization.

31572126231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39123105.

The product of its digits is 15120, while the sum is 33.

The spelling of 31572126231 in words is "thirty-one billion, five hundred seventy-two million, one hundred twenty-six thousand, two hundred thirty-one".