930621431 has 2 divisors, whose sum is σ = 930621432. Its totient is φ = 930621430.

The previous prime is 930621401. The next prime is 930621451. The reversal of 930621431 is 134126039.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-930621431 is a prime.

It is a super-2 number, since 2×930621431² = 1732112495672975522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 930621394 and 930621403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (930621401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465310715 + 465310716.

It is an arithmetic number, because the mean of its divisors is an integer number (465310716).

Almost surely, 2^930621431 is an apocalyptic number.

930621431 is a deficient number, since it is larger than the sum of its proper divisors (1).

930621431 is an equidigital number, since it uses as much as digits as its factorization.

930621431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 930621431 is about 30506.0884250997. The cubic root of 930621431 is about 976.3173710189.

The spelling of 930621431 in words is "nine hundred thirty million, six hundred twenty-one thousand, four hundred thirty-one".