31142331401 has 4 divisors (see below), whose sum is σ = 31143538704. Its totient is φ = 31141124100.

The previous prime is 31142331379. The next prime is 31142331449. The reversal of 31142331401 is 10413324113.

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 a de Polignac number, because none of the positive numbers 2^k-31142331401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31142331461) 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, 564095 + ... + 616836.

It is an arithmetic number, because the mean of its divisors is an integer number (7785884676).

Almost surely, 2^31142331401 is an apocalyptic number.

It is an amenable number.

31142331401 is a deficient number, since it is larger than the sum of its proper divisors (1207303).

31142331401 is a wasteful number, since it uses less digits than its factorization.

31142331401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207302.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31142331401 its reverse (10413324113), we get a palindrome (41555655514).

The spelling of 31142331401 in words is "thirty-one billion, one hundred forty-two million, three hundred thirty-one thousand, four hundred one".