190631 has 8 divisors (see below), whose sum is σ = 220704. Its totient is φ = 161280.

The previous prime is 190613. The next prime is 190633. The reversal of 190631 is 136091.

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

It is a de Polignac number, because none of the positive numbers 2^k-190631 is a prime.

It is a super-2 number, since 2×190631² = 72680356322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190633) 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, 671 + ... + 911.

It is an arithmetic number, because the mean of its divisors is an integer number (27588).

2¹⁹⁰⁶³¹ is an apocalyptic number.

190631 is a deficient number, since it is larger than the sum of its proper divisors (30073).

190631 is a wasteful number, since it uses less digits than its factorization.

190631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 190631 is about 436.6131010403. The cubic root of 190631 is about 57.5525417664.

The spelling of 190631 in words is "one hundred ninety thousand, six hundred thirty-one".