70233431 has 2 divisors, whose sum is σ = 70233432. Its totient is φ = 70233430.

The previous prime is 70233419. The next prime is 70233433. The reversal of 70233431 is 13433207.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13433207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70233431 - 2¹⁴ = 70217047 is a prime.

It is a super-2 number, since 2×70233431² = 9865469660063522, which contains 22 as substring.

Together with 70233433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70233397 and 70233406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70233433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35116715 + 35116716.

It is an arithmetic number, because the mean of its divisors is an integer number (35116716).

Almost surely, 2^70233431 is an apocalyptic number.

70233431 is a deficient number, since it is larger than the sum of its proper divisors (1).

70233431 is an equidigital number, since it uses as much as digits as its factorization.

70233431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 70233431 is about 8380.5388251592. The cubic root of 70233431 is about 412.5861339568.

Adding to 70233431 its reverse (13433207), we get a palindrome (83666638).

The spelling of 70233431 in words is "seventy million, two hundred thirty-three thousand, four hundred thirty-one".