31143532412403 has 12 divisors (see below), whose sum is σ = 44985327557560. Its totient is φ = 20762251010496.

The previous prime is 31143532412383. The next prime is 31143532412441. The reversal of 31143532412403 is 30421423534113.

31143532412403 is a `hidden beast` number, since 3 + 1 + 1 + 4 + 3 + 5 + 3 + 241 + 2 + 403 = 666.

It is not a de Polignac number, because 31143532412403 - 2⁶ = 31143532412339 is a prime.

It is a super-2 number, since 2×31143532412403² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31143532412483) 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, 6740701 + ... + 10379022.

Almost surely, 2^{31143532412403} is an apocalyptic number.

31143532412403 is a deficient number, since it is larger than the sum of its proper divisors (13841795145157).

31143532412403 is a wasteful number, since it uses less digits than its factorization.

31143532412403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17321858 (or 17321855 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 31143532412403 its reverse (30421423534113), we get a palindrome (61564955946516).

The spelling of 31143532412403 in words is "thirty-one trillion, one hundred forty-three billion, five hundred thirty-two million, four hundred twelve thousand, four hundred three".