70671031 has 2 divisors, whose sum is σ = 70671032. Its totient is φ = 70671030.

The previous prime is 70671017. The next prime is 70671049. The reversal of 70671031 is 13017607.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70671031 - 2⁷ = 70670903 is a prime.

It is a super-2 number, since 2×70671031² = 9988789245205922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70670987 and 70671005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70671011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35335515 + 35335516.

It is an arithmetic number, because the mean of its divisors is an integer number (35335516).

Almost surely, 2^70671031 is an apocalyptic number.

70671031 is a deficient number, since it is larger than the sum of its proper divisors (1).

70671031 is an equidigital number, since it uses as much as digits as its factorization.

70671031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 70671031 is about 8406.6063902148. The cubic root of 70671031 is about 413.4412538321.

Adding to 70671031 its reverse (13017607), we get a palindrome (83688638).

The spelling of 70671031 in words is "seventy million, six hundred seventy-one thousand, thirty-one".