401077731 has 4 divisors (see below), whose sum is σ = 534770312. Its totient is φ = 267385152.

The previous prime is 401077711. The next prime is 401077751. The reversal of 401077731 is 137770104.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (401077711) and next prime (401077751).

It is not a de Polignac number, because 401077731 - 2⁹ = 401077219 is a prime.

It is a super-2 number, since 2×401077731² = 321726692608216722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401077711) 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, 66846286 + ... + 66846291.

It is an arithmetic number, because the mean of its divisors is an integer number (133692578).

Almost surely, 2^401077731 is an apocalyptic number.

401077731 is a deficient number, since it is larger than the sum of its proper divisors (133692581).

401077731 is a wasteful number, since it uses less digits than its factorization.

401077731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133692580.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 401077731 is about 20026.9251509062. The cubic root of 401077731 is about 737.4674387999.

The spelling of 401077731 in words is "four hundred one million, seventy-seven thousand, seven hundred thirty-one".