1231526116 has 48 divisors (see below), whose sum is σ = 2317896000. Its totient is φ = 570775680.

The previous prime is 1231526111. The next prime is 1231526123. The reversal of 1231526116 is 6116251321.

It is not an unprimeable number, because it can be changed into a prime (1231526111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1205686 + ... + 1206706.

It is an arithmetic number, because the mean of its divisors is an integer number (48289500).

Almost surely, 2^1231526116 is an apocalyptic number.

It is an amenable number.

1231526116 is a deficient number, since it is larger than the sum of its proper divisors (1086369884).

1231526116 is a wasteful number, since it uses less digits than its factorization.

1231526116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1370 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 1231526116 is about 35093.1063885772. The cubic root of 1231526116 is about 1071.8842149117.

Adding to 1231526116 its reverse (6116251321), we get a palindrome (7347777437).

The spelling of 1231526116 in words is "one billion, two hundred thirty-one million, five hundred twenty-six thousand, one hundred sixteen".