20311454514 has 64 divisors (see below), whose sum is σ = 48335180544. Its totient is φ = 5626300416.

The previous prime is 20311454509. The next prime is 20311454539. The reversal of 20311454514 is 41545411302.

20311454514 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302499 + ... + 363494.

It is an arithmetic number, because the mean of its divisors is an integer number (755237196).

Almost surely, 2^20311454514 is an apocalyptic number.

20311454514 is an abundant number, since it is smaller than the sum of its proper divisors (28023726030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311454514 is a wasteful number, since it uses less digits than its factorization.

20311454514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666051.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 20311454514 its reverse (41545411302), we get a palindrome (61856865816).

It can be divided in two parts, 20311 and 454514, that added together give a triangular number (474825 = T₉₇₄).

The spelling of 20311454514 in words is "twenty billion, three hundred eleven million, four hundred fifty-four thousand, five hundred fourteen".