118731451031 has 4 divisors (see below), whose sum is σ = 118732504200. Its totient is φ = 118730397864.

The previous prime is 118731450991. The next prime is 118731451057. The reversal of 118731451031 is 130154137811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 118731451031 - 2⁶ = 118731450967 is a prime.

It is a super-2 number, since 2×118731451031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118731450982 and 118731451000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118731451061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334001 + ... + 590778.

It is an arithmetic number, because the mean of its divisors is an integer number (29683126050).

Almost surely, 2^118731451031 is an apocalyptic number.

118731451031 is a deficient number, since it is larger than the sum of its proper divisors (1053169).

118731451031 is an equidigital number, since it uses as much as digits as its factorization.

118731451031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053168.

The product of its (nonzero) digits is 10080, while the sum is 35.

Adding to 118731451031 its reverse (130154137811), we get a palindrome (248885588842).

The spelling of 118731451031 in words is "one hundred eighteen billion, seven hundred thirty-one million, four hundred fifty-one thousand, thirty-one".