9957543031 has 2 divisors, whose sum is σ = 9957543032. Its totient is φ = 9957543030.

The previous prime is 9957542993. The next prime is 9957543041. The reversal of 9957543031 is 1303457599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9957543031 - 2³³ = 1367608439 is a prime.

It is a super-2 number, since 2×9957543031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9957543041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978771515 + 4978771516.

It is an arithmetic number, because the mean of its divisors is an integer number (4978771516).

Almost surely, 2^9957543031 is an apocalyptic number.

9957543031 is a deficient number, since it is larger than the sum of its proper divisors (1).

9957543031 is an equidigital number, since it uses as much as digits as its factorization.

9957543031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 46.

The square root of 9957543031 is about 99787.4893511206. The cubic root of 9957543031 is about 2151.3813391839.

The spelling of 9957543031 in words is "nine billion, nine hundred fifty-seven million, five hundred forty-three thousand, thirty-one".