331534427 has 4 divisors (see below), whose sum is σ = 378896496. Its totient is φ = 284172360.

The previous prime is 331534421. The next prime is 331534499. The reversal of 331534427 is 724435133.

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 331534427 - 2¹⁴ = 331518043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331534393 and 331534402.

It is not an unprimeable number, because it can be changed into a prime (331534421) 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, 23681024 + ... + 23681037.

It is an arithmetic number, because the mean of its divisors is an integer number (94724124).

Almost surely, 2^331534427 is an apocalyptic number.

331534427 is a deficient number, since it is larger than the sum of its proper divisors (47362069).

331534427 is an equidigital number, since it uses as much as digits as its factorization.

331534427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47362068.

The product of its digits is 30240, while the sum is 32.

The square root of 331534427 is about 18208.0868572181. The cubic root of 331534427 is about 692.1117318500. Note that the first 3 decimals are identical.

The spelling of 331534427 in words is "three hundred thirty-one million, five hundred thirty-four thousand, four hundred twenty-seven".