145383631 has 8 divisors (see below), whose sum is σ = 146995200. Its totient is φ = 143779608.

The previous prime is 145383617. The next prime is 145383659. The reversal of 145383631 is 136383541.

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 145383631 - 2¹⁷ = 145252559 is a prime.

It is a super-2 number, since 2×145383631² = 42272800325488322, 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 (145383691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42420 + ... + 45718.

It is an arithmetic number, because the mean of its divisors is an integer number (18374400).

Almost surely, 2^145383631 is an apocalyptic number.

145383631 is a deficient number, since it is larger than the sum of its proper divisors (1611569).

145383631 is a wasteful number, since it uses less digits than its factorization.

145383631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773.

The product of its digits is 25920, while the sum is 34.

The square root of 145383631 is about 12057.5134667144. The cubic root of 145383631 is about 525.8216985919.

The spelling of 145383631 in words is "one hundred forty-five million, three hundred eighty-three thousand, six hundred thirty-one".