401542931 has 8 divisors (see below), whose sum is σ = 410874000. Its totient is φ = 392300640.

The previous prime is 401542919. The next prime is 401542963. The reversal of 401542931 is 139245104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401542931 is a prime.

It is a super-2 number, since 2×401542931² = 322473450872141522, 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 = 401542894 and 401542903.

It is not an unprimeable number, because it can be changed into a prime (401542231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13001 + ... + 31178.

It is an arithmetic number, because the mean of its divisors is an integer number (51359250).

Almost surely, 2^401542931 is an apocalyptic number.

401542931 is a deficient number, since it is larger than the sum of its proper divisors (9331069).

401542931 is a wasteful number, since it uses less digits than its factorization.

401542931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44389.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 401542931 is about 20038.5361491303. The cubic root of 401542931 is about 737.7524519632.

The spelling of 401542931 in words is "four hundred one million, five hundred forty-two thousand, nine hundred thirty-one".