331119971557 has 2 divisors, whose sum is σ = 331119971558. Its totient is φ = 331119971556.

The previous prime is 331119971531. The next prime is 331119971573. The reversal of 331119971557 is 755179911133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265025217636 + 66094753921 = 514806^2 + 257089^2 .

It is an emirp because it is prime and its reverse (755179911133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331119971557 - 2¹⁵ = 331119938789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331119971587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165559985778 + 165559985779.

It is an arithmetic number, because the mean of its divisors is an integer number (165559985779).

Almost surely, 2^331119971557 is an apocalyptic number.

It is an amenable number.

331119971557 is a deficient number, since it is larger than the sum of its proper divisors (1).

331119971557 is an equidigital number, since it uses as much as digits as its factorization.

331119971557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 893025, while the sum is 52.

The spelling of 331119971557 in words is "three hundred thirty-one billion, one hundred nineteen million, nine hundred seventy-one thousand, five hundred fifty-seven".