3161251 has 4 divisors (see below), whose sum is σ = 3164832. Its totient is φ = 3157672.

The previous prime is 3161237. The next prime is 3161273. The reversal of 3161251 is 1521613.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3161251 - 2¹¹ = 3159203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3161351) 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, 585 + ... + 2581.

It is an arithmetic number, because the mean of its divisors is an integer number (791208).

Almost surely, 2^3161251 is an apocalyptic number.

3161251 is the 1125-th centered pentagonal number.

3161251 is a deficient number, since it is larger than the sum of its proper divisors (3581).

3161251 is a wasteful number, since it uses less digits than its factorization.

3161251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580.

The product of its digits is 180, while the sum is 19.

The square root of 3161251 is about 1777.9907198858. The cubic root of 3161251 is about 146.7640405950.

Adding to 3161251 its reverse (1521613), we get a palindrome (4682864).

The spelling of 3161251 in words is "three million, one hundred sixty-one thousand, two hundred fifty-one".