71032901 has 4 divisors (see below), whose sum is σ = 74121312. Its totient is φ = 67944492.

The previous prime is 71032891. The next prime is 71032903. The reversal of 71032901 is 10923017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71032901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 3088387 = 71032901 / (7 + 1 + 0 + 3 + 2 + 9 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71032903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544171 + ... + 1544216.

It is an arithmetic number, because the mean of its divisors is an integer number (18530328).

Almost surely, 2^71032901 is an apocalyptic number.

It is an amenable number.

71032901 is a deficient number, since it is larger than the sum of its proper divisors (3088411).

71032901 is a wasteful number, since it uses less digits than its factorization.

71032901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088410.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 71032901 is about 8428.1018622226. The cubic root of 71032901 is about 414.1457261190.

Adding to 71032901 its reverse (10923017), we get a palindrome (81955918).

The spelling of 71032901 in words is "seventy-one million, thirty-two thousand, nine hundred one".