1310012440 has 64 divisors (see below), whose sum is σ = 3219484320. Its totient is φ = 475776000.

The previous prime is 1310012411. The next prime is 1310012461. The reversal of 1310012440 is 442100131.

It is a super-2 number, since 2×1310012440² = 3432265185909507200, which contains 22 as substring.

It is a congruent number.

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, 518380 + ... + 520900.

Almost surely, 2^1310012440 is an apocalyptic number.

1310012440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310012440 is an abundant number, since it is smaller than the sum of its proper divisors (1909471880).

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

1310012440 is a wasteful number, since it uses less digits than its factorization.

1310012440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724 (or 3720 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1310012440 is about 36194.0939933575. The cubic root of 1310012440 is about 1094.1876448770.

Adding to 1310012440 its reverse (442100131), we get a palindrome (1752112571).

The spelling of 1310012440 in words is "one billion, three hundred ten million, twelve thousand, four hundred forty".