1012023231 has 4 divisors (see below), whose sum is σ = 1349364312. Its totient is φ = 674682152.

The previous prime is 1012023193. The next prime is 1012023263. The reversal of 1012023231 is 1323202101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012023231 - 2⁶ = 1012023167 is a prime.

It is a super-2 number, since 2×1012023231² = 2048382040167358722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1012023231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012023281) 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, 168670536 + ... + 168670541.

It is an arithmetic number, because the mean of its divisors is an integer number (337341078).

Almost surely, 2^1012023231 is an apocalyptic number.

1012023231 is a deficient number, since it is larger than the sum of its proper divisors (337341081).

1012023231 is an equidigital number, since it uses as much as digits as its factorization.

1012023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337341080.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1012023231 is about 31812.3125691925. The cubic root of 1012023231 is about 1003.9917880923.

Adding to 1012023231 its reverse (1323202101), we get a palindrome (2335225332).

The spelling of 1012023231 in words is "one billion, twelve million, twenty-three thousand, two hundred thirty-one".