1231513302 has 32 divisors (see below), whose sum is σ = 2481880320. Its totient is φ = 407371680.

The previous prime is 1231513279. The next prime is 1231513331. The reversal of 1231513302 is 2033151321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 953277 + ... + 954567.

It is an arithmetic number, because the mean of its divisors is an integer number (77558760).

Almost surely, 2^1231513302 is an apocalyptic number.

1231513302 is an abundant number, since it is smaller than the sum of its proper divisors (1250367018).

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

1231513302 is a wasteful number, since it uses less digits than its factorization.

1231513302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388.

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

The square root of 1231513302 is about 35092.9238166329. The cubic root of 1231513302 is about 1071.8804972555.

Adding to 1231513302 its reverse (2033151321), we get a palindrome (3264664623).

The spelling of 1231513302 in words is "one billion, two hundred thirty-one million, five hundred thirteen thousand, three hundred two".