1312548690 has 32 divisors (see below), whose sum is σ = 3315913920. Its totient is φ = 331591104.

The previous prime is 1312548571. The next prime is 1312548697. The reversal of 1312548690 is 968452131.

1312548690 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1312548690² = 3445568127241432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312548697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1150789 + ... + 1151928.

It is an arithmetic number, because the mean of its divisors is an integer number (103622310).

Almost surely, 2^1312548690 is an apocalyptic number.

1312548690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312548690 is an abundant number, since it is smaller than the sum of its proper divisors (2003365230).

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

1312548690 is a wasteful number, since it uses less digits than its factorization.

1312548690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302746.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1312548690 is about 36229.1138450832. The cubic root of 1312548690 is about 1094.8933237752.

The spelling of 1312548690 in words is "one billion, three hundred twelve million, five hundred forty-eight thousand, six hundred ninety".