628059431 has 2 divisors, whose sum is σ = 628059432. Its totient is φ = 628059430.

The previous prime is 628059391. The next prime is 628059437. The reversal of 628059431 is 134950826.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628059431 - 2²² = 623865127 is a prime.

It is a super-2 number, since 2×628059431² = 788917297736087522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628059437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314029715 + 314029716.

It is an arithmetic number, because the mean of its divisors is an integer number (314029716).

Almost surely, 2^628059431 is an apocalyptic number.

628059431 is a deficient number, since it is larger than the sum of its proper divisors (1).

628059431 is an equidigital number, since it uses as much as digits as its factorization.

628059431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 628059431 is about 25061.1139217713. The cubic root of 628059431 is about 856.3807840722.

The spelling of 628059431 in words is "six hundred twenty-eight million, fifty-nine thousand, four hundred thirty-one".