31154450416 has 20 divisors (see below), whose sum is σ = 60925879512. Its totient is φ = 15431642816.

The previous prime is 31154450387. The next prime is 31154450417. The reversal of 31154450416 is 61405445113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31154450417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9097135 + ... + 9100558.

Almost surely, 2^31154450416 is an apocalyptic number.

It is an amenable number.

31154450416 is a deficient number, since it is larger than the sum of its proper divisors (29771429096).

31154450416 is a wasteful number, since it uses less digits than its factorization.

31154450416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18197808 (or 18197802 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 31154450416 its reverse (61405445113), we get a palindrome (92559895529).

The spelling of 31154450416 in words is "thirty-one billion, one hundred fifty-four million, four hundred fifty thousand, four hundred sixteen".