162131 has 4 divisors (see below), whose sum is σ = 163152. Its totient is φ = 161112.

The previous prime is 162119. The next prime is 162143. The reversal of 162131 is 131261.

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 an interprime number because it is at equal distance from previous prime (162119) and next prime (162143).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162131 is a prime.

It is a super-2 number, since 2×162131² = 52572922322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (162731) 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, 215 + ... + 608.

It is an arithmetic number, because the mean of its divisors is an integer number (40788).

2¹⁶²¹³¹ is an apocalyptic number.

162131 is a deficient number, since it is larger than the sum of its proper divisors (1021).

162131 is an equidigital number, since it uses as much as digits as its factorization.

162131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its digits is 36, while the sum is 14.

The square root of 162131 is about 402.6549391228. The cubic root of 162131 is about 54.5283078259.

Adding to 162131 its reverse (131261), we get a palindrome (293392).

The spelling of 162131 in words is "one hundred sixty-two thousand, one hundred thirty-one".