70742231 has 6 divisors (see below), whose sum is σ = 82292040. Its totient is φ = 60636156.

The previous prime is 70742207. The next prime is 70742251. The reversal of 70742231 is 13224707.

It is not a de Polignac number, because 70742231 - 2⁶ = 70742167 is a prime.

It is a super-2 number, since 2×70742231² = 10008926493714722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70742231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70742201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 721811 + ... + 721908.

It is an arithmetic number, because the mean of its divisors is an integer number (13715340).

Almost surely, 2^70742231 is an apocalyptic number.

70742231 is a deficient number, since it is larger than the sum of its proper divisors (11549809).

70742231 is a wasteful number, since it uses less digits than its factorization.

70742231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443733 (or 1443726 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 70742231 is about 8410.8400888377. The cubic root of 70742231 is about 413.5800525101.

Adding to 70742231 its reverse (13224707), we get a palindrome (83966938).

The spelling of 70742231 in words is "seventy million, seven hundred forty-two thousand, two hundred thirty-one".