31401431421401 has 4 divisors (see below), whose sum is σ = 31423253126400. Its totient is φ = 31379609716404.

The previous prime is 31401431421377. The next prime is 31401431421407. The reversal of 31401431421401 is 10412413410413.

It is a happy number.

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 31401431421401 - 2²⁶ = 31401364312537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31401431421407) 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, 10910850341 + ... + 10910853218.

It is an arithmetic number, because the mean of its divisors is an integer number (7855813281600).

Almost surely, 2^{31401431421401} is an apocalyptic number.

It is an amenable number.

31401431421401 is a deficient number, since it is larger than the sum of its proper divisors (21821704999).

31401431421401 is a wasteful number, since it uses less digits than its factorization.

31401431421401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21821704998.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 31401431421401 its reverse (10412413410413), we get a palindrome (41813844831814).

The spelling of 31401431421401 in words is "thirty-one trillion, four hundred one billion, four hundred thirty-one million, four hundred twenty-one thousand, four hundred one".