401240031 has 8 divisors (see below), whose sum is σ = 539071104. Its totient is φ = 265451160.

The previous prime is 401240029. The next prime is 401240053. The reversal of 401240031 is 130042104.

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

It is not a de Polignac number, because 401240031 - 2¹ = 401240029 is a prime.

It is a super-2 number, since 2×401240031² = 321987124953761922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401240431) 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, 510091 + ... + 510876.

It is an arithmetic number, because the mean of its divisors is an integer number (67383888).

Almost surely, 2^401240031 is an apocalyptic number.

401240031 is a deficient number, since it is larger than the sum of its proper divisors (137831073).

401240031 is a wasteful number, since it uses less digits than its factorization.

401240031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021101.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 401240031 is about 20030.9767859683. The cubic root of 401240031 is about 737.5668998395.

Adding to 401240031 its reverse (130042104), we get a palindrome (531282135).

The spelling of 401240031 in words is "four hundred one million, two hundred forty thousand, thirty-one".