124911931 has 2 divisors, whose sum is σ = 124911932. Its totient is φ = 124911930.

The previous prime is 124911893. The next prime is 124911949. The reversal of 124911931 is 139119421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124911931 is a prime.

It is a super-2 number, since 2×124911931² = 31205981012297522, which contains 22 as substring.

It is equal to p_7105396 and since 124911931 and 7105396 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 124911893 and 124911902.

It is not a weakly prime, because it can be changed into another prime (124911991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62455965 + 62455966.

It is an arithmetic number, because the mean of its divisors is an integer number (62455966).

Almost surely, 2^124911931 is an apocalyptic number.

124911931 is a deficient number, since it is larger than the sum of its proper divisors (1).

124911931 is an equidigital number, since it uses as much as digits as its factorization.

124911931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 31.

The square root of 124911931 is about 11176.4006281092. The cubic root of 124911931 is about 499.8825470784.

The spelling of 124911931 in words is "one hundred twenty-four million, nine hundred eleven thousand, nine hundred thirty-one".