1012233531 has 24 divisors (see below), whose sum is σ = 1462972944. Its totient is φ = 622002240.

The previous prime is 1012233529. The next prime is 1012233577. The reversal of 1012233531 is 1353322101.

It is not a de Polignac number, because 1012233531 - 2¹ = 1012233529 is a prime.

It is a super-2 number, since 2×1012233531² = 2049233442561455922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012233498 and 1012233507.

It is not an unprimeable number, because it can be changed into a prime (1012237531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27441 + ... + 52701.

It is an arithmetic number, because the mean of its divisors is an integer number (60957206).

Almost surely, 2^1012233531 is an apocalyptic number.

1012233531 is a deficient number, since it is larger than the sum of its proper divisors (450739413).

1012233531 is a wasteful number, since it uses less digits than its factorization.

1012233531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25339 (or 25320 counting only the distinct ones).

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

The square root of 1012233531 is about 31815.6177214902. The cubic root of 1012233531 is about 1004.0613269603.

Adding to 1012233531 its reverse (1353322101), we get a palindrome (2365555632).

The spelling of 1012233531 in words is "one billion, twelve million, two hundred thirty-three thousand, five hundred thirty-one".