145631733 has 16 divisors (see below), whose sum is σ = 209595456. Its totient is φ = 89412480.

The previous prime is 145631723. The next prime is 145631737. The reversal of 145631733 is 337136541.

It is a de Polignac number, because none of the positive numbers 2^k-145631733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145631694 and 145631703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145631737) 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, 13738 + ... + 21908.

It is an arithmetic number, because the mean of its divisors is an integer number (13099716).

Almost surely, 2^145631733 is an apocalyptic number.

145631733 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145631733 is a deficient number, since it is larger than the sum of its proper divisors (63963723).

145631733 is a wasteful number, since it uses less digits than its factorization.

145631733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8644.

The product of its digits is 22680, while the sum is 33.

The square root of 145631733 is about 12067.7973549443. The cubic root of 145631733 is about 526.1206393426.

The spelling of 145631733 in words is "one hundred forty-five million, six hundred thirty-one thousand, seven hundred thirty-three".