1315154431 has 4 divisors (see below), whose sum is σ = 1328175864. Its totient is φ = 1302133000.

The previous prime is 1315154429. The next prime is 1315154453. The reversal of 1315154431 is 1344515131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1344515131 = 101 ⋅13312031.

It is a cyclic number.

It is not a de Polignac number, because 1315154431 - 2¹ = 1315154429 is a prime.

It is a super-2 number, since 2×1315154431² = 3459262354757867522, which contains 22 as substring.

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 1315154431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315154411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6510565 + ... + 6510766.

It is an arithmetic number, because the mean of its divisors is an integer number (332043966).

Almost surely, 2^1315154431 is an apocalyptic number.

1315154431 is a deficient number, since it is larger than the sum of its proper divisors (13021433).

1315154431 is a wasteful number, since it uses less digits than its factorization.

1315154431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13021432.

The product of its digits is 3600, while the sum is 28.

The square root of 1315154431 is about 36265.0579897510. The cubic root of 1315154431 is about 1095.6173915233.

Adding to 1315154431 its reverse (1344515131), we get a palindrome (2659669562).

The spelling of 1315154431 in words is "one billion, three hundred fifteen million, one hundred fifty-four thousand, four hundred thirty-one".