70342531 has 8 divisors (see below), whose sum is σ = 80445024. Its totient is φ = 60253440.

The previous prime is 70342477. The next prime is 70342537. The reversal of 70342531 is 13524307.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70342531 - 2⁷ = 70342403 is a prime.

It is a super-2 number, since 2×70342531² = 9896143334971922, 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 = 70342496 and 70342505.

It is not an unprimeable number, because it can be changed into a prime (70342537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13701 + ... + 18121.

It is an arithmetic number, because the mean of its divisors is an integer number (10055628).

Almost surely, 2^70342531 is an apocalyptic number.

70342531 is a deficient number, since it is larger than the sum of its proper divisors (10102493).

70342531 is a wasteful number, since it uses less digits than its factorization.

70342531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6701.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 70342531 is about 8387.0454273242. The cubic root of 70342531 is about 412.7996593345.

Adding to 70342531 its reverse (13524307), we get a palindrome (83866838).

It can be divided in two parts, 703 and 42531, that added together give a palindrome (43234).

The spelling of 70342531 in words is "seventy million, three hundred forty-two thousand, five hundred thirty-one".