6131230440 has 64 divisors (see below), whose sum is σ = 18705470400. Its totient is φ = 1607281152.

The previous prime is 6131230439. The next prime is 6131230477. The reversal of 6131230440 is 440321316.

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 6131230440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425917 + ... + 440076.

It is an arithmetic number, because the mean of its divisors is an integer number (292272975).

Almost surely, 2^6131230440 is an apocalyptic number.

6131230440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6131230440 is an abundant number, since it is smaller than the sum of its proper divisors (12574239960).

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

6131230440 is a wasteful number, since it uses less digits than its factorization.

6131230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866066 (or 866062 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6131230440 is about 78302.1739161819. The cubic root of 6131230440 is about 1830.2730280322.

Adding to 6131230440 its reverse (440321316), we get a palindrome (6571551756).

The spelling of 6131230440 in words is "six billion, one hundred thirty-one million, two hundred thirty thousand, four hundred forty".