1315231242 has 16 divisors (see below), whose sum is σ = 2832805920. Its totient is φ = 404686512.

The previous prime is 1315231237. The next prime is 1315231249. The reversal of 1315231242 is 2421325131.

It is not an unprimeable number, because it can be changed into a prime (1315231249) 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, 8430892 + ... + 8431047.

It is an arithmetic number, because the mean of its divisors is an integer number (177050370).

Almost surely, 2^1315231242 is an apocalyptic number.

1315231242 is an abundant number, since it is smaller than the sum of its proper divisors (1517574678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315231242 is a wasteful number, since it uses less digits than its factorization.

1315231242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16861957.

The product of its digits is 1440, while the sum is 24.

The square root of 1315231242 is about 36266.1169964472. The cubic root of 1315231242 is about 1095.6387207876.

Adding to 1315231242 its reverse (2421325131), we get a palindrome (3736556373).

The spelling of 1315231242 in words is "one billion, three hundred fifteen million, two hundred thirty-one thousand, two hundred forty-two".