3131430999 has 16 divisors (see below), whose sum is σ = 4217843712. Its totient is φ = 2066395968.

The previous prime is 3131430997. The next prime is 3131431001. The reversal of 3131430999 is 9990341313.

It is an interprime number because it is at equal distance from previous prime (3131430997) and next prime (3131431001).

It is not a de Polignac number, because 3131430999 - 2¹ = 3131430997 is a prime.

It is a super-3 number, since 3×3131430999³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3131430999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131430997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159507 + ... + 178059.

It is an arithmetic number, because the mean of its divisors is an integer number (263615232).

Almost surely, 2^3131430999 is an apocalyptic number.

3131430999 is a deficient number, since it is larger than the sum of its proper divisors (1086412713).

3131430999 is a wasteful number, since it uses less digits than its factorization.

3131430999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19126.

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 3131430999 is about 55959.1904784192. The cubic root of 3131430999 is about 1463.0110808714.

The spelling of 3131430999 in words is "three billion, one hundred thirty-one million, four hundred thirty thousand, nine hundred ninety-nine".