20310253157 has 16 divisors (see below), whose sum is σ = 20970323712. Its totient is φ = 19656302400.

The previous prime is 20310253147. The next prime is 20310253177. The reversal of 20310253157 is 75135201302.

It is a cyclic number.

It is not a de Polignac number, because 20310253157 - 2¹⁶ = 20310187621 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 (20310253147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7338788 + ... + 7341554.

It is an arithmetic number, because the mean of its divisors is an integer number (1310645232).

Almost surely, 2^20310253157 is an apocalyptic number.

It is an amenable number.

20310253157 is a deficient number, since it is larger than the sum of its proper divisors (660070555).

20310253157 is a wasteful number, since it uses less digits than its factorization.

20310253157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788.

The product of its (nonzero) digits is 6300, while the sum is 29.

Adding to 20310253157 its reverse (75135201302), we get a palindrome (95445454459).

The spelling of 20310253157 in words is "twenty billion, three hundred ten million, two hundred fifty-three thousand, one hundred fifty-seven".