621483431 has 2 divisors, whose sum is σ = 621483432. Its totient is φ = 621483430.

The previous prime is 621483367. The next prime is 621483439. The reversal of 621483431 is 134384126.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621483431 - 2⁶ = 621483367 is a prime.

It is a super-2 number, since 2×621483431² = 772483310015063522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621483439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310741715 + 310741716.

It is an arithmetic number, because the mean of its divisors is an integer number (310741716).

Almost surely, 2^621483431 is an apocalyptic number.

621483431 is a deficient number, since it is larger than the sum of its proper divisors (1).

621483431 is an equidigital number, since it uses as much as digits as its factorization.

621483431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 32.

The square root of 621483431 is about 24929.5694106417. The cubic root of 621483431 is about 853.3814235627.

The spelling of 621483431 in words is "six hundred twenty-one million, four hundred eighty-three thousand, four hundred thirty-one".