31242142453 has 8 divisors (see below), whose sum is σ = 34020482400. Its totient is φ = 28577204208.

The previous prime is 31242142439. The next prime is 31242142537. The reversal of 31242142453 is 35424124213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31242142453 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 (31242142423) 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, 28349851 + ... + 28350952.

It is an arithmetic number, because the mean of its divisors is an integer number (4252560300).

Almost surely, 2^31242142453 is an apocalyptic number.

It is an amenable number.

31242142453 is a deficient number, since it is larger than the sum of its proper divisors (2778339947).

31242142453 is a wasteful number, since it uses less digits than its factorization.

31242142453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56700851.

The product of its digits is 23040, while the sum is 31.

Adding to 31242142453 its reverse (35424124213), we get a palindrome (66666266666).

The spelling of 31242142453 in words is "thirty-one billion, two hundred forty-two million, one hundred forty-two thousand, four hundred fifty-three".