31040031401 has 4 divisors (see below), whose sum is σ = 31121931600. Its totient is φ = 30958131204.

The previous prime is 31040031311. The next prime is 31040031403. The reversal of 31040031401 is 10413004013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31040031401 - 2²⁶ = 30972922537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31040031401.

It is not an unprimeable number, because it can be changed into a prime (31040031403) 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, 40949531 + ... + 40950288.

It is an arithmetic number, because the mean of its divisors is an integer number (7780482900).

Almost surely, 2^31040031401 is an apocalyptic number.

It is an amenable number.

31040031401 is a deficient number, since it is larger than the sum of its proper divisors (81900199).

31040031401 is an equidigital number, since it uses as much as digits as its factorization.

31040031401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81900198.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31040031401 its reverse (10413004013), we get a palindrome (41453035414).

The spelling of 31040031401 in words is "thirty-one billion, forty million, thirty-one thousand, four hundred one".