70421031 has 6 divisors (see below), whose sum is σ = 101719280. Its totient is φ = 46947348.

The previous prime is 70421003. The next prime is 70421033. The reversal of 70421031 is 13012407.

It is not a de Polignac number, because 70421031 - 2¹¹ = 70418983 is a prime.

It is a super-2 number, since 2×70421031² = 9918243214205922, 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 = 70420995 and 70421013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70421033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3912271 + ... + 3912288.

Almost surely, 2^70421031 is an apocalyptic number.

70421031 is a deficient number, since it is larger than the sum of its proper divisors (31298249).

70421031 is a wasteful number, since it uses less digits than its factorization.

70421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7824565 (or 7824562 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 70421031 is about 8391.7239587584. The cubic root of 70421031 is about 412.9531592917.

Adding to 70421031 its reverse (13012407), we get a palindrome (83433438).

The spelling of 70421031 in words is "seventy million, four hundred twenty-one thousand, thirty-one".