31004453040 has 160 divisors (see below), whose sum is σ = 106830233856. Its totient is φ = 7374382080.

The previous prime is 31004453009. The next prime is 31004453107. The reversal of 31004453040 is 4035440013.

It is a super-2 number, since 2×31004453040² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31004453040.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29127 + ... + 250713.

Almost surely, 2^31004453040 is an apocalyptic number.

31004453040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31004453040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53415116928).

31004453040 is an abundant number, since it is smaller than the sum of its proper divisors (75825780816).

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

31004453040 is a wasteful number, since it uses less digits than its factorization.

31004453040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221667 (or 221661 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 31004453040 its reverse (4035440013), we get a palindrome (35039893053).

The spelling of 31004453040 in words is "thirty-one billion, four million, four hundred fifty-three thousand, forty".