53511431031 has 20 divisors (see below), whose sum is σ = 80644248432. Its totient is φ = 35358579648.

The previous prime is 53511431023. The next prime is 53511431101. The reversal of 53511431031 is 13013411535.

It is a happy number.

53511431031 is a `hidden beast` number, since 5 + 3 + 511 + 43 + 103 + 1 = 666.

It is not a de Polignac number, because 53511431031 - 2³ = 53511431023 is a prime.

It is a super-2 number, since 2×53511431031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 53511430986 and 53511431004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53511431431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2914011 + ... + 2932316.

Almost surely, 2^53511431031 is an apocalyptic number.

53511431031 is a deficient number, since it is larger than the sum of its proper divisors (27132817401).

53511431031 is a wasteful number, since it uses less digits than its factorization.

53511431031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5846452 (or 5846443 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 53511431031 its reverse (13013411535), we get a palindrome (66524842566).

The spelling of 53511431031 in words is "fifty-three billion, five hundred eleven million, four hundred thirty-one thousand, thirty-one".