70942631 has 4 divisors (see below), whose sum is σ = 71279064. Its totient is φ = 70606200.

The previous prime is 70942621. The next prime is 70942633. The reversal of 70942631 is 13624907.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70942631 - 2¹⁸ = 70680487 is a prime.

It is a super-2 number, since 2×70942631² = 10065713786404322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70942633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167900 + ... + 168321.

It is an arithmetic number, because the mean of its divisors is an integer number (17819766).

Almost surely, 2^70942631 is an apocalyptic number.

70942631 is a deficient number, since it is larger than the sum of its proper divisors (336433).

70942631 is a wasteful number, since it uses less digits than its factorization.

70942631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336432.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 70942631 is about 8422.7448613857. The cubic root of 70942631 is about 413.9702169213.

The spelling of 70942631 in words is "seventy million, nine hundred forty-two thousand, six hundred thirty-one".