745612231 has 32 divisors (see below), whose sum is σ = 1022837760. Its totient is φ = 525989376.

The previous prime is 745612223. The next prime is 745612253. The reversal of 745612231 is 132216547.

745612231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 745612231 - 2³ = 745612223 is a prime.

It is a super-2 number, since 2×745612231² = 1111875198033594722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 745612193 and 745612202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745612261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16710 + ... + 42076.

It is an arithmetic number, because the mean of its divisors is an integer number (31963680).

Almost surely, 2^745612231 is an apocalyptic number.

745612231 is a deficient number, since it is larger than the sum of its proper divisors (277225529).

745612231 is a wasteful number, since it uses less digits than its factorization.

745612231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25423.

The product of its digits is 10080, while the sum is 31.

The square root of 745612231 is about 27305.9010288985. The cubic root of 745612231 is about 906.7850287163.

Adding to 745612231 its reverse (132216547), we get a palindrome (877828778).

The spelling of 745612231 in words is "seven hundred forty-five million, six hundred twelve thousand, two hundred thirty-one".