331620007 has 2 divisors, whose sum is σ = 331620008. Its totient is φ = 331620006.

The previous prime is 331619983. The next prime is 331620019. The reversal of 331620007 is 700026133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331620007 - 2⁷ = 331619879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331620007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331620407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165810003 + 165810004.

It is an arithmetic number, because the mean of its divisors is an integer number (165810004).

Almost surely, 2^331620007 is an apocalyptic number.

331620007 is a deficient number, since it is larger than the sum of its proper divisors (1).

331620007 is an equidigital number, since it uses as much as digits as its factorization.

331620007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 331620007 is about 18210.4367602757. The cubic root of 331620007 is about 692.1712790357.

The spelling of 331620007 in words is "three hundred thirty-one million, six hundred twenty thousand, seven".