31143100222431 has 12 divisors (see below), whose sum is σ = 45054005894352. Its totient is φ = 20729977063296.

The previous prime is 31143100222397. The next prime is 31143100222447. The reversal of 31143100222431 is 13422200134113.

31143100222431 is a `hidden beast` number, since 3 + 1 + 1 + 4 + 3 + 1 + 0 + 0 + 222 + 431 = 666.

It is not a de Polignac number, because 31143100222431 - 2²⁶ = 31143033113567 is a prime.

It is a super-2 number, since 2×31143100222431² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31143100222395 and 31143100222404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143100222331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2674139826 + ... + 2674151471.

It is an arithmetic number, because the mean of its divisors is an integer number (3754500491196).

Almost surely, 2^{31143100222431} is an apocalyptic number.

31143100222431 is a deficient number, since it is larger than the sum of its proper divisors (13910905671921).

31143100222431 is a wasteful number, since it uses less digits than its factorization.

31143100222431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5348291950 (or 5348291947 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 31143100222431 its reverse (13422200134113), we get a palindrome (44565300356544).

The spelling of 31143100222431 in words is "thirty-one trillion, one hundred forty-three billion, one hundred million, two hundred twenty-two thousand, four hundred thirty-one".