1031172530440 has 128 divisors (see below), whose sum is σ = 2656440541440. Its totient is φ = 357315019776.

The previous prime is 1031172530411. The next prime is 1031172530497. The reversal of 1031172530440 is 440352711301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179502 + ... + 1447261.

It is an arithmetic number, because the mean of its divisors is an integer number (20753441730).

Almost surely, 2^{1031172530440} is an apocalyptic number.

1031172530440 is a gapful number since it is divisible by the number (10) 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 1031172530440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1328220270720).

1031172530440 is an abundant number, since it is smaller than the sum of its proper divisors (1625268011000).

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

1031172530440 is a wasteful number, since it uses less digits than its factorization.

1031172530440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626863 (or 1626859 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 1031172530440 in words is "one trillion, thirty-one billion, one hundred seventy-two million, five hundred thirty thousand, four hundred forty".