125312313 has 8 divisors (see below), whose sum is σ = 190952128. Its totient is φ = 71607024.

The previous prime is 125312309. The next prime is 125312329. The reversal of 125312313 is 313213521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125312313 - 2² = 125312309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5967253 = 125312313 / (1 + 2 + 5 + 3 + 1 + 2 + 3 + 1 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125312313.

It is not an unprimeable number, because it can be changed into a prime (125312413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2983606 + ... + 2983647.

It is an arithmetic number, because the mean of its divisors is an integer number (23869016).

Almost surely, 2^125312313 is an apocalyptic number.

It is an amenable number.

125312313 is a deficient number, since it is larger than the sum of its proper divisors (65639815).

125312313 is an equidigital number, since it uses as much as digits as its factorization.

125312313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5967263.

The product of its digits is 540, while the sum is 21.

The square root of 125312313 is about 11194.2982361558. The cubic root of 125312313 is about 500.4160710071.

Adding to 125312313 its reverse (313213521), we get a palindrome (438525834).

The spelling of 125312313 in words is "one hundred twenty-five million, three hundred twelve thousand, three hundred thirteen".