71234131 has 8 divisors (see below), whose sum is σ = 75675600. Its totient is φ = 66820608.

The previous prime is 71234123. The next prime is 71234143. The reversal of 71234131 is 13143217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71234131 - 2³ = 71234123 is a prime.

It is a super-2 number, since 2×71234131² = 10148602838650322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71234161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606 + ... + 12043.

It is an arithmetic number, because the mean of its divisors is an integer number (9459450).

Almost surely, 2^71234131 is an apocalyptic number.

71234131 is a deficient number, since it is larger than the sum of its proper divisors (4441469).

71234131 is a wasteful number, since it uses less digits than its factorization.

71234131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13973.

The product of its digits is 504, while the sum is 22.

The square root of 71234131 is about 8440.0314572873. The cubic root of 71234131 is about 414.5364369491.

Adding to 71234131 its reverse (13143217), we get a palindrome (84377348).

It can be divided in two parts, 712 and 34131, that added together give a palindrome (34843).

The spelling of 71234131 in words is "seventy-one million, two hundred thirty-four thousand, one hundred thirty-one".