31307141431 has 2 divisors, whose sum is σ = 31307141432. Its totient is φ = 31307141430.

The previous prime is 31307141419. The next prime is 31307141473. The reversal of 31307141431 is 13414170313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31307141431 - 2⁹ = 31307140919 is a prime.

It is a super-2 number, since 2×31307141431² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31307141431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31307741431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15653570715 + 15653570716.

It is an arithmetic number, because the mean of its divisors is an integer number (15653570716).

Almost surely, 2^31307141431 is an apocalyptic number.

31307141431 is a deficient number, since it is larger than the sum of its proper divisors (1).

31307141431 is an equidigital number, since it uses as much as digits as its factorization.

31307141431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 31307141431 in words is "thirty-one billion, three hundred seven million, one hundred forty-one thousand, four hundred thirty-one".