1012231131 has 8 divisors (see below), whose sum is σ = 1357443600. Its totient is φ = 670919712.

The previous prime is 1012231123. The next prime is 1012231159. The reversal of 1012231131 is 1311322101.

It is a happy number.

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

It is not a de Polignac number, because 1012231131 - 2³ = 1012231123 is a prime.

It is a super-2 number, since 2×1012231131² = 2049223725131078322, 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 1012231131.

It is not an unprimeable number, because it can be changed into a prime (1012231111) 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, 974656 + ... + 975693.

It is an arithmetic number, because the mean of its divisors is an integer number (169680450).

Almost surely, 2^1012231131 is an apocalyptic number.

1012231131 is a deficient number, since it is larger than the sum of its proper divisors (345212469).

1012231131 is a wasteful number, since it uses less digits than its factorization.

1012231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950525.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1012231131 is about 31815.5800041426. The cubic root of 1012231131 is about 1004.0605334184.

Adding to 1012231131 its reverse (1311322101), we get a palindrome (2323553232).

The spelling of 1012231131 in words is "one billion, twelve million, two hundred thirty-one thousand, one hundred thirty-one".