31231420541 has 8 divisors (see below), whose sum is σ = 31463081184. Its totient is φ = 31000248720.

The previous prime is 31231420537. The next prime is 31231420559. The reversal of 31231420541 is 14502413213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31231420541 - 2² = 31231420537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31231420541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231428541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6551 + ... + 250011.

It is an arithmetic number, because the mean of its divisors is an integer number (3932885148).

Almost surely, 2^31231420541 is an apocalyptic number.

It is an amenable number.

31231420541 is a deficient number, since it is larger than the sum of its proper divisors (231660643).

31231420541 is a wasteful number, since it uses less digits than its factorization.

31231420541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244411.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 31231420541 its reverse (14502413213), we get a palindrome (45733833754).

The spelling of 31231420541 in words is "thirty-one billion, two hundred thirty-one million, four hundred twenty thousand, five hundred forty-one".