31042231401 has 4 divisors (see below), whose sum is σ = 41389641872. Its totient is φ = 20694820932.

The previous prime is 31042231391. The next prime is 31042231403. The reversal of 31042231401 is 10413224013.

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 not a de Polignac number, because 31042231401 - 2¹¹ = 31042229353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31042231403) 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, 5173705231 + ... + 5173705236.

It is an arithmetic number, because the mean of its divisors is an integer number (10347410468).

Almost surely, 2^31042231401 is an apocalyptic number.

It is an amenable number.

31042231401 is a deficient number, since it is larger than the sum of its proper divisors (10347410471).

31042231401 is a wasteful number, since it uses less digits than its factorization.

31042231401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10347410470.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31042231401 its reverse (10413224013), we get a palindrome (41455455414).

The spelling of 31042231401 in words is "thirty-one billion, forty-two million, two hundred thirty-one thousand, four hundred one".