1012343231 has 4 divisors (see below), whose sum is σ = 1012477200. Its totient is φ = 1012209264.

The previous prime is 1012343221. The next prime is 1012343243. The reversal of 1012343231 is 1323432101.

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-1012343231 is a prime.

It is a super-2 number, since 2×1012343231² = 2049677634703038722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012343221) 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, 54926 + ... + 71003.

It is an arithmetic number, because the mean of its divisors is an integer number (253119300).

Almost surely, 2^1012343231 is an apocalyptic number.

1012343231 is a deficient number, since it is larger than the sum of its proper divisors (133969).

1012343231 is an equidigital number, since it uses as much as digits as its factorization.

1012343231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133968.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1012343231 is about 31817.3416708562. The cubic root of 1012343231 is about 1004.0975970981.

Adding to 1012343231 its reverse (1323432101), we get a palindrome (2335775332).

The spelling of 1012343231 in words is "one billion, twelve million, three hundred forty-three thousand, two hundred thirty-one".