1312475100 has 144 divisors (see below), whose sum is σ = 3922853088. Its totient is φ = 338549760.

The previous prime is 1312475083. The next prime is 1312475107. The reversal of 1312475100 is 15742131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312475107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3518514 + ... + 3518886.

Almost surely, 2^1312475100 is an apocalyptic number.

1312475100 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 1312475100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1961426544).

1312475100 is an abundant number, since it is smaller than the sum of its proper divisors (2610377988).

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

1312475100 is a wasteful number, since it uses less digits than its factorization.

1312475100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1312475100 is about 36228.0982111951. The cubic root of 1312475100 is about 1094.8728611170.

The spelling of 1312475100 in words is "one billion, three hundred twelve million, four hundred seventy-five thousand, one hundred".