1012553231 has 4 divisors (see below), whose sum is σ = 1018616592. Its totient is φ = 1006489872.

The previous prime is 1012553197. The next prime is 1012553237. The reversal of 1012553231 is 1323552101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012553231 is a prime.

It is a super-2 number, since 2×1012553231² = 2050528091217078722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012553197 and 1012553206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012553237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3031430 + ... + 3031763.

It is an arithmetic number, because the mean of its divisors is an integer number (254654148).

Almost surely, 2^1012553231 is an apocalyptic number.

1012553231 is a deficient number, since it is larger than the sum of its proper divisors (6063361).

1012553231 is an equidigital number, since it uses as much as digits as its factorization.

1012553231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063360.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1012553231 is about 31820.6415868694. The cubic root of 1012553231 is about 1004.1670221410.

The spelling of 1012553231 in words is "one billion, twelve million, five hundred fifty-three thousand, two hundred thirty-one".