54135220431 has 32 divisors (see below), whose sum is σ = 76217011200. Its totient is φ = 34127775360.

The previous prime is 54135220429. The next prime is 54135220439. The reversal of 54135220431 is 13402253145.

It is not a de Polignac number, because 54135220431 - 2¹ = 54135220429 is a prime.

It is a super-2 number, since 2×54135220431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54135220439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1371585 + ... + 1410501.

It is an arithmetic number, because the mean of its divisors is an integer number (2381781600).

Almost surely, 2^54135220431 is an apocalyptic number.

54135220431 is a deficient number, since it is larger than the sum of its proper divisors (22081790769).

54135220431 is a wasteful number, since it uses less digits than its factorization.

54135220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39279.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 54135220431 its reverse (13402253145), we get a palindrome (67537473576).

The spelling of 54135220431 in words is "fifty-four billion, one hundred thirty-five million, two hundred twenty thousand, four hundred thirty-one".