7131901 has 6 divisors (see below), whose sum is σ = 8296350. Its totient is φ = 6113016.

The previous prime is 7131899. The next prime is 7131923. The reversal of 7131901 is 1091317.

It can be written as a sum of positive squares in only one way, i.e., 6708100 + 423801 = 2590^2 + 651^2 .

It is not a de Polignac number, because 7131901 - 2¹ = 7131899 is a prime.

It is a Duffinian number.

7131901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72726 + ... + 72823.

It is an arithmetic number, because the mean of its divisors is an integer number (1382725).

Almost surely, 2^7131901 is an apocalyptic number.

It is an amenable number.

7131901 is a deficient number, since it is larger than the sum of its proper divisors (1164449).

7131901 is a wasteful number, since it uses less digits than its factorization.

7131901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145563 (or 145556 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 22.

The square root of 7131901 is about 2670.5619258875. The cubic root of 7131901 is about 192.4871616782.

The spelling of 7131901 in words is "seven million, one hundred thirty-one thousand, nine hundred one".