31541135454 has 40 divisors (see below), whose sum is σ = 72319139640. Its totient is φ = 10269204624.

The previous prime is 31541135447. The next prime is 31541135557. The reversal of 31541135454 is 45453114513.

31541135454 is a `hidden beast` number, since 3 + 1 + 541 + 13 + 54 + 54 = 666.

It is a super-2 number, since 2×31541135454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2256969 + ... + 2270900.

It is an arithmetic number, because the mean of its divisors is an integer number (1807978491).

Almost surely, 2^31541135454 is an apocalyptic number.

31541135454 is an abundant number, since it is smaller than the sum of its proper divisors (40778004186).

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

31541135454 is a wasteful number, since it uses less digits than its factorization.

31541135454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527926 (or 4527917 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 31541135454 its reverse (45453114513), we get a palindrome (76994249967).

The spelling of 31541135454 in words is "thirty-one billion, five hundred forty-one million, one hundred thirty-five thousand, four hundred fifty-four".