70437031 has 4 divisors (see below), whose sum is σ = 80499472. Its totient is φ = 60374592.

The previous prime is 70437019. The next prime is 70437049. The reversal of 70437031 is 13073407.

It is a happy number.

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 70437031 - 2¹¹ = 70434983 is a prime.

It is a super-2 number, since 2×70437031² = 9922750672189922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70436987 and 70437005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70437331) 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, 5031210 + ... + 5031223.

It is an arithmetic number, because the mean of its divisors is an integer number (20124868).

Almost surely, 2^70437031 is an apocalyptic number.

70437031 is a deficient number, since it is larger than the sum of its proper divisors (10062441).

70437031 is a wasteful number, since it uses less digits than its factorization.

70437031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10062440.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 70437031 is about 8392.6772248193. The cubic root of 70437031 is about 412.9844319107.

The spelling of 70437031 in words is "seventy million, four hundred thirty-seven thousand, thirty-one".