745133831 has 8 divisors (see below), whose sum is σ = 802682160. Its totient is φ = 687618432.

The previous prime is 745133813. The next prime is 745133839. The reversal of 745133831 is 138331547.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745133831 is a prime.

It is a super-2 number, since 2×745133831² = 1110448852201473122, 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 = 745133791 and 745133800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745133839) 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, 59396 + ... + 70838.

It is an arithmetic number, because the mean of its divisors is an integer number (100335270).

Almost surely, 2^745133831 is an apocalyptic number.

745133831 is a deficient number, since it is larger than the sum of its proper divisors (57548329).

745133831 is a wasteful number, since it uses less digits than its factorization.

745133831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16465.

The product of its digits is 30240, while the sum is 35.

The square root of 745133831 is about 27297.1396120546. The cubic root of 745133831 is about 906.5910499731.

The spelling of 745133831 in words is "seven hundred forty-five million, one hundred thirty-three thousand, eight hundred thirty-one".