401560331 has 4 divisors (see below), whose sum is σ = 401716392. Its totient is φ = 401404272.

The previous prime is 401560301. The next prime is 401560333. The reversal of 401560331 is 133065104.

It is a happy number.

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 401560331 - 2²² = 397366027 is a prime.

It is a super-2 number, since 2×401560331² = 322501398865659122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401560297 and 401560306.

It is not an unprimeable number, because it can be changed into a prime (401560333) 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, 74105 + ... + 79338.

It is an arithmetic number, because the mean of its divisors is an integer number (100429098).

Almost surely, 2^401560331 is an apocalyptic number.

401560331 is a deficient number, since it is larger than the sum of its proper divisors (156061).

401560331 is a wasteful number, since it uses less digits than its factorization.

401560331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156060.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 401560331 is about 20038.9703078776. The cubic root of 401560331 is about 737.7631081150.

It can be divided in two parts, 4015 and 60331, that added together give a palindrome (64346).

The spelling of 401560331 in words is "four hundred one million, five hundred sixty thousand, three hundred thirty-one".