745213031 has 2 divisors, whose sum is σ = 745213032. Its totient is φ = 745213030.

The previous prime is 745213009. The next prime is 745213033. The reversal of 745213031 is 130312547.

745213031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745213031 is a prime.

It is a super-2 number, since 2×745213031² = 1110684923144413922, which contains 22 as substring.

Together with 745213033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745213033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372606515 + 372606516.

It is an arithmetic number, because the mean of its divisors is an integer number (372606516).

Almost surely, 2^745213031 is an apocalyptic number.

745213031 is a deficient number, since it is larger than the sum of its proper divisors (1).

745213031 is an equidigital number, since it uses as much as digits as its factorization.

745213031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 745213031 is about 27298.5902749574. The cubic root of 745213031 is about 906.6231692446.

Adding to 745213031 its reverse (130312547), we get a palindrome (875525578).

The spelling of 745213031 in words is "seven hundred forty-five million, two hundred thirteen thousand, thirty-one".