331302312442 has 4 divisors (see below), whose sum is σ = 496953468666. Its totient is φ = 165651156220.

The previous prime is 331302312427. The next prime is 331302312493. The reversal of 331302312442 is 244213203133.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 308168206641 + 23134105801 = 555129^2 + 152099^2 .

It is a super-2 number, since 2×331302312442² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331302312442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82825578109 + ... + 82825578112.

Almost surely, 2^331302312442 is an apocalyptic number.

331302312442 is a deficient number, since it is larger than the sum of its proper divisors (165651156224).

331302312442 is a wasteful number, since it uses less digits than its factorization.

331302312442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165651156223.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 331302312442 its reverse (244213203133), we get a palindrome (575515515575).

The spelling of 331302312442 in words is "three hundred thirty-one billion, three hundred two million, three hundred twelve thousand, four hundred forty-two".