401456281731 has 8 divisors (see below), whose sum is σ = 536084840784. Its totient is φ = 267232621920.

The previous prime is 401456281729. The next prime is 401456281741. The reversal of 401456281731 is 137182654104.

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

It is not a de Polignac number, because 401456281731 - 2¹ = 401456281729 is a prime.

It is a super-2 number, since 2×401456281731² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401456281741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101222496 + ... + 101226461.

It is an arithmetic number, because the mean of its divisors is an integer number (67010605098).

Almost surely, 2^401456281731 is an apocalyptic number.

401456281731 is a deficient number, since it is larger than the sum of its proper divisors (134628559053).

401456281731 is a wasteful number, since it uses less digits than its factorization.

401456281731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202449621.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 401456281731 in words is "four hundred one billion, four hundred fifty-six million, two hundred eighty-one thousand, seven hundred thirty-one".