1023231631 has 8 divisors (see below), whose sum is σ = 1041238800. Its totient is φ = 1005246720.

The previous prime is 1023231619. The next prime is 1023231637. The reversal of 1023231631 is 1361323201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1023231631 - 2⁹ = 1023231119 is a prime.

It is a super-2 number, since 2×1023231631² = 2094005941357840322, 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 (1023231637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106861 + ... + 116041.

It is an arithmetic number, because the mean of its divisors is an integer number (130154850).

Almost surely, 2^1023231631 is an apocalyptic number.

1023231631 is a deficient number, since it is larger than the sum of its proper divisors (18007169).

1023231631 is an equidigital number, since it uses as much as digits as its factorization.

1023231631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11129.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1023231631 is about 31987.9919813670. The cubic root of 1023231631 is about 1007.6846715525.

Adding to 1023231631 its reverse (1361323201), we get a palindrome (2384554832).

The spelling of 1023231631 in words is "one billion, twenty-three million, two hundred thirty-one thousand, six hundred thirty-one".