1315201655 has 16 divisors (see below), whose sum is σ = 1616254464. Its totient is φ = 1026859680.

The previous prime is 1315201639. The next prime is 1315201661. The reversal of 1315201655 is 5561025131.

It is not a de Polignac number, because 1315201655 - 2⁴ = 1315201639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495542 + ... + 498188.

It is an arithmetic number, because the mean of its divisors is an integer number (101015904).

Almost surely, 2^1315201655 is an apocalyptic number.

1315201655 is a deficient number, since it is larger than the sum of its proper divisors (301052809).

1315201655 is a wasteful number, since it uses less digits than its factorization.

1315201655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1315201655 is about 36265.7090789633. The cubic root of 1315201655 is about 1095.6305050191.

Adding to 1315201655 its reverse (5561025131), we get a palindrome (6876226786).

The spelling of 1315201655 in words is "one billion, three hundred fifteen million, two hundred one thousand, six hundred fifty-five".