70008431 has 4 divisors (see below), whose sum is σ = 74126592. Its totient is φ = 65890272.

The previous prime is 70008413. The next prime is 70008439. The reversal of 70008431 is 13480007.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13480007 = 79 ⋅170633.

It is a cyclic number.

It is not a de Polignac number, because 70008431 - 2¹⁰ = 70007407 is a prime.

It is a super-4 number, since 4×70008431⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70008397 and 70008406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70008439) 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, 2059055 + ... + 2059088.

It is an arithmetic number, because the mean of its divisors is an integer number (18531648).

Almost surely, 2^70008431 is an apocalyptic number.

70008431 is a deficient number, since it is larger than the sum of its proper divisors (4118161).

70008431 is a wasteful number, since it uses less digits than its factorization.

70008431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118160.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 70008431 is about 8367.1040987907. The cubic root of 70008431 is about 412.1450752958.

Adding to 70008431 its reverse (13480007), we get a palindrome (83488438).

The spelling of 70008431 in words is "seventy million, eight thousand, four hundred thirty-one".