31540154056 has 32 divisors (see below), whose sum is σ = 60083246880. Its totient is φ = 15518448000.

The previous prime is 31540154039. The next prime is 31540154059. The reversal of 31540154056 is 65045104513.

It is a super-2 number, since 2×31540154056² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31540154059) 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 7 ways as a sum of consecutive naturals, for example, 490156 + ... + 550756.

It is an arithmetic number, because the mean of its divisors is an integer number (1877601465).

Almost surely, 2^31540154056 is an apocalyptic number.

It is an amenable number.

31540154056 is a deficient number, since it is larger than the sum of its proper divisors (28543092824).

31540154056 is a wasteful number, since it uses less digits than its factorization.

31540154056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61645 (or 61641 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 31540154056 its reverse (65045104513), we get a palindrome (96585258569).

The spelling of 31540154056 in words is "thirty-one billion, five hundred forty million, one hundred fifty-four thousand, fifty-six".