331420534 has 16 divisors (see below), whose sum is σ = 525242880. Its totient is φ = 156404520.

The previous prime is 331420519. The next prime is 331420541. The reversal of 331420534 is 435024133.

It is a junction number, because it is equal to n+sod(n) for n = 331420499 and 331420508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5794 + ... + 26389.

It is an arithmetic number, because the mean of its divisors is an integer number (32827680).

Almost surely, 2^331420534 is an apocalyptic number.

331420534 is a deficient number, since it is larger than the sum of its proper divisors (193822346).

331420534 is a wasteful number, since it uses less digits than its factorization.

331420534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32475.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 331420534 is about 18204.9590496656. The cubic root of 331420534 is about 692.0324683776.

Adding to 331420534 its reverse (435024133), we get a palindrome (766444667).

The spelling of 331420534 in words is "three hundred thirty-one million, four hundred twenty thousand, five hundred thirty-four".