31301231540421 has 4 divisors (see below), whose sum is σ = 41734975387232. Its totient is φ = 20867487693612.

The previous prime is 31301231540407. The next prime is 31301231540429. The reversal of 31301231540421 is 12404513210313.

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 31301231540421 - 2⁵ = 31301231540389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301231540429) 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, 5216871923401 + ... + 5216871923406.

It is an arithmetic number, because the mean of its divisors is an integer number (10433743846808).

Almost surely, 2^{31301231540421} is an apocalyptic number.

It is an amenable number.

31301231540421 is a deficient number, since it is larger than the sum of its proper divisors (10433743846811).

31301231540421 is a wasteful number, since it uses less digits than its factorization.

31301231540421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10433743846810.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 31301231540421 its reverse (12404513210313), we get a palindrome (43705744750734).

The spelling of 31301231540421 in words is "thirty-one trillion, three hundred one billion, two hundred thirty-one million, five hundred forty thousand, four hundred twenty-one".