1312121325 has 48 divisors (see below), whose sum is σ = 2225857536. Its totient is φ = 681720000.

The previous prime is 1312121311. The next prime is 1312121339. The reversal of 1312121325 is 5231212131.

It is an interprime number because it is at equal distance from previous prime (1312121311) and next prime (1312121339).

It is not a de Polignac number, because 1312121325 - 2⁷ = 1312121197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 884034 + ... + 885516.

It is an arithmetic number, because the mean of its divisors is an integer number (46372032).

Almost surely, 2^1312121325 is an apocalyptic number.

1312121325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312121325 is a deficient number, since it is larger than the sum of its proper divisors (913736211).

1312121325 is a wasteful number, since it uses less digits than its factorization.

1312121325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 1789 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 1312121325 is about 36223.2152769464. The cubic root of 1312121325 is about 1094.7744786908.

Adding to 1312121325 its reverse (5231212131), we get a palindrome (6543333456).

The spelling of 1312121325 in words is "one billion, three hundred twelve million, one hundred twenty-one thousand, three hundred twenty-five".