1312224045 has 32 divisors (see below), whose sum is σ = 2369416320. Its totient is φ = 614288640.

The previous prime is 1312224041. The next prime is 1312224047. The reversal of 1312224045 is 5404222131.

It is not a de Polignac number, because 1312224045 - 2² = 1312224041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312224041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132334 + ... + 141903.

It is an arithmetic number, because the mean of its divisors is an integer number (74044260).

Almost surely, 2^1312224045 is an apocalyptic number.

1312224045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312224045 is a deficient number, since it is larger than the sum of its proper divisors (1057192275).

1312224045 is a wasteful number, since it uses less digits than its factorization.

1312224045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274285.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1312224045 is about 36224.6331244362. The cubic root of 1312224045 is about 1094.8030462473.

Adding to 1312224045 its reverse (5404222131), we get a palindrome (6716446176).

The spelling of 1312224045 in words is "one billion, three hundred twelve million, two hundred twenty-four thousand, forty-five".