1315253751 has 16 divisors (see below), whose sum is σ = 2034111744. Its totient is φ = 740355264.

The previous prime is 1315253747. The next prime is 1315253759. The reversal of 1315253751 is 1573525131.

It is not a de Polignac number, because 1315253751 - 2² = 1315253747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315253759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465990 + ... + 468803.

It is an arithmetic number, because the mean of its divisors is an integer number (127131984).

Almost surely, 2^1315253751 is an apocalyptic number.

1315253751 is a deficient number, since it is larger than the sum of its proper divisors (718857993).

1315253751 is an equidigital number, since it uses as much as digits as its factorization.

1315253751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934870.

The product of its digits is 15750, while the sum is 33.

The square root of 1315253751 is about 36266.4273261098. The cubic root of 1315253751 is about 1095.6449710424.

Adding to 1315253751 its reverse (1573525131), we get a palindrome (2888778882).

The spelling of 1315253751 in words is "one billion, three hundred fifteen million, two hundred fifty-three thousand, seven hundred fifty-one".