1231022508 has 24 divisors (see below), whose sum is σ = 2971434480. Its totient is φ = 396191040.

The previous prime is 1231022473. The next prime is 1231022509. The reversal of 1231022508 is 8052201321.

It is a super-2 number, since 2×1231022508² = 3030832830405220128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231022509) 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, 1768363 + ... + 1769058.

It is an arithmetic number, because the mean of its divisors is an integer number (123809770).

Almost surely, 2^1231022508 is an apocalyptic number.

It is an amenable number.

1231022508 is an abundant number, since it is smaller than the sum of its proper divisors (1740411972).

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

1231022508 is a wasteful number, since it uses less digits than its factorization.

1231022508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537457 (or 3537455 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1231022508 is about 35085.9303425176. The cubic root of 1231022508 is about 1071.7380864464.

Adding to 1231022508 its reverse (8052201321), we get a palindrome (9283223829).

The spelling of 1231022508 in words is "one billion, two hundred thirty-one million, twenty-two thousand, five hundred eight".