2167428783931 has 2 divisors, whose sum is σ = 2167428783932. Its totient is φ = 2167428783930.

The previous prime is 2167428783893. The next prime is 2167428783943. The reversal of 2167428783931 is 1393878247612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2167428783931 - 2³⁷ = 2029989830459 is a prime.

It is a super-2 number, since 2×2167428783931² (a number of 25 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 2167428783931.

It is not a weakly prime, because it can be changed into another prime (2167428783131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083714391965 + 1083714391966.

It is an arithmetic number, because the mean of its divisors is an integer number (1083714391966).

Almost surely, 2^{2167428783931} is an apocalyptic number.

2167428783931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167428783931 is an equidigital number, since it uses as much as digits as its factorization.

2167428783931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 61.

The spelling of 2167428783931 in words is "two trillion, one hundred sixty-seven billion, four hundred twenty-eight million, seven hundred eighty-three thousand, nine hundred thirty-one".