351315220387 has 4 divisors (see below), whose sum is σ = 351678525616. Its totient is φ = 350951915160.

The previous prime is 351315220367. The next prime is 351315220397. The reversal of 351315220387 is 783022513153.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 351315220387 - 2⁷ = 351315220259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351315220357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181651164 + ... + 181653097.

It is an arithmetic number, because the mean of its divisors is an integer number (87919631404).

Almost surely, 2^351315220387 is an apocalyptic number.

351315220387 is a deficient number, since it is larger than the sum of its proper divisors (363305229).

351315220387 is an equidigital number, since it uses as much as digits as its factorization.

351315220387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363305228.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 351315220387 in words is "three hundred fifty-one billion, three hundred fifteen million, two hundred twenty thousand, three hundred eighty-seven".