1145383631 has 16 divisors (see below), whose sum is σ = 1393401600. Its totient is φ = 919626048.

The previous prime is 1145383627. The next prime is 1145383637. The reversal of 1145383631 is 1363835411.

It is a cyclic number.

It is not a de Polignac number, because 1145383631 - 2² = 1145383627 is a prime.

It is a super-2 number, since 2×1145383631² = 2623807324325488322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145383591 and 1145383600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145383637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36545 + ... + 60218.

It is an arithmetic number, because the mean of its divisors is an integer number (87087600).

Almost surely, 2^1145383631 is an apocalyptic number.

1145383631 is a deficient number, since it is larger than the sum of its proper divisors (248017969).

1145383631 is an equidigital number, since it uses as much as digits as its factorization.

1145383631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96878.

The product of its digits is 25920, while the sum is 35.

The square root of 1145383631 is about 33843.5168237581. The cubic root of 1145383631 is about 1046.2857828270.

The spelling of 1145383631 in words is "one billion, one hundred forty-five million, three hundred eighty-three thousand, six hundred thirty-one".