2857618831231 has 2 divisors, whose sum is σ = 2857618831232. Its totient is φ = 2857618831230.

The previous prime is 2857618831157. The next prime is 2857618831259. The reversal of 2857618831231 is 1321388167582.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2857618831231 is a prime.

It is a super-2 number, since 2×2857618831231² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857618831031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428809415615 + 1428809415616.

It is an arithmetic number, because the mean of its divisors is an integer number (1428809415616).

Almost surely, 2^{2857618831231} is an apocalyptic number.

2857618831231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857618831231 is an equidigital number, since it uses as much as digits as its factorization.

2857618831231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 55.

The spelling of 2857618831231 in words is "two trillion, eight hundred fifty-seven billion, six hundred eighteen million, eight hundred thirty-one thousand, two hundred thirty-one".