1145516731 has 8 divisors (see below), whose sum is σ = 1149395184. Its totient is φ = 1141645920.

The previous prime is 1145516711. The next prime is 1145516741. The reversal of 1145516731 is 1376155411.

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

It is a cyclic number.

It is not a de Polignac number, because 1145516731 - 2⁵ = 1145516699 is a prime.

It is a super-3 number, since 3×1145516731³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145516711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473916 + ... + 476326.

It is an arithmetic number, because the mean of its divisors is an integer number (143674398).

Almost surely, 2^1145516731 is an apocalyptic number.

1145516731 is a deficient number, since it is larger than the sum of its proper divisors (3878453).

1145516731 is an equidigital number, since it uses as much as digits as its factorization.

1145516731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821.

The product of its digits is 12600, while the sum is 34.

The square root of 1145516731 is about 33845.4831698411. The cubic root of 1145516731 is about 1046.3263093487.

The spelling of 1145516731 in words is "one billion, one hundred forty-five million, five hundred sixteen thousand, seven hundred thirty-one".