401973131 has 4 divisors (see below), whose sum is σ = 459397872. Its totient is φ = 344548392.

The previous prime is 401973083. The next prime is 401973163. The reversal of 401973131 is 131379104.

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 401973131 - 2²⁶ = 334864267 is a prime.

It is a super-2 number, since 2×401973131² = 323164796091886322, 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 = 401973094 and 401973103.

It is not an unprimeable number, because it can be changed into a prime (401973191) 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, 28712360 + ... + 28712373.

It is an arithmetic number, because the mean of its divisors is an integer number (114849468).

Almost surely, 2^401973131 is an apocalyptic number.

401973131 is a deficient number, since it is larger than the sum of its proper divisors (57424741).

401973131 is an equidigital number, since it uses as much as digits as its factorization.

401973131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57424740.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 401973131 is about 20049.2675926080. The cubic root of 401973131 is about 738.0158259006.

The spelling of 401973131 in words is "four hundred one million, nine hundred seventy-three thousand, one hundred thirty-one".