1011403231 has 12 divisors (see below), whose sum is σ = 1069848000. Its totient is φ = 956007648.

The previous prime is 1011403213. The next prime is 1011403259. The reversal of 1011403231 is 1323041101.

It is not a de Polignac number, because 1011403231 - 2¹⁹ = 1010878943 is a prime.

It is a super-2 number, since 2×1011403231² = 2045872991354478722, 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 (1011403271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169995 + ... + 175843.

It is an arithmetic number, because the mean of its divisors is an integer number (89154000).

Almost surely, 2^1011403231 is an apocalyptic number.

1011403231 is a deficient number, since it is larger than the sum of its proper divisors (58444769).

1011403231 is an equidigital number, since it uses as much as digits as its factorization.

1011403231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366 (or 6347 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1011403231 is about 31802.5664215956. The cubic root of 1011403231 is about 1003.7867196547.

Adding to 1011403231 its reverse (1323041101), we get a palindrome (2334444332).

The spelling of 1011403231 in words is "one billion, eleven million, four hundred three thousand, two hundred thirty-one".