70950931 has 2 divisors, whose sum is σ = 70950932. Its totient is φ = 70950930.

The previous prime is 70950881. The next prime is 70950953. The reversal of 70950931 is 13905907.

It is a strong prime.

It is an emirp because it is prime and its reverse (13905907) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70950931 is a prime.

It is a super-2 number, since 2×70950931² = 10068069219533522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70950031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35475465 + 35475466.

It is an arithmetic number, because the mean of its divisors is an integer number (35475466).

Almost surely, 2^70950931 is an apocalyptic number.

70950931 is a deficient number, since it is larger than the sum of its proper divisors (1).

70950931 is an equidigital number, since it uses as much as digits as its factorization.

70950931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 70950931 is about 8423.2375604633. The cubic root of 70950931 is about 413.9863605704.

The spelling of 70950931 in words is "seventy million, nine hundred fifty thousand, nine hundred thirty-one".