70631117 has 4 divisors (see below), whose sum is σ = 71316960. Its totient is φ = 69945276.

The previous prime is 70631111. The next prime is 70631123. The reversal of 70631117 is 71113607.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71113607 = 73 ⋅974159.

It is an interprime number because it is at equal distance from previous prime (70631111) and next prime (70631123).

It is a cyclic number.

It is not a de Polignac number, because 70631117 - 2¹⁰ = 70630093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70631111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342767 + ... + 342972.

It is an arithmetic number, because the mean of its divisors is an integer number (17829240).

Almost surely, 2^70631117 is an apocalyptic number.

It is an amenable number.

70631117 is a deficient number, since it is larger than the sum of its proper divisors (685843).

70631117 is a wasteful number, since it uses less digits than its factorization.

70631117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685842.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 70631117 is about 8404.2320886563. The cubic root of 70631117 is about 413.3634039141.

The spelling of 70631117 in words is "seventy million, six hundred thirty-one thousand, one hundred seventeen".