190031157 has 8 divisors (see below), whose sum is σ = 281527680. Its totient is φ = 126687420.

The previous prime is 190031077. The next prime is 190031159. The reversal of 190031157 is 751130091.

It is a happy number.

It is not a de Polignac number, because 190031157 - 2⁷ = 190031029 is a prime.

It is a super-2 number, since 2×190031157² = 72223681261517298, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7038191 = 190031157 / (1 + 9 + 0 + 0 + 3 + 1 + 1 + 5 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 190031157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190031159) 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, 3519069 + ... + 3519122.

It is an arithmetic number, because the mean of its divisors is an integer number (35190960).

Almost surely, 2^190031157 is an apocalyptic number.

It is an amenable number.

190031157 is a deficient number, since it is larger than the sum of its proper divisors (91496523).

190031157 is an equidigital number, since it uses as much as digits as its factorization.

190031157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038200 (or 7038194 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 190031157 is about 13785.1788889372. The cubic root of 190031157 is about 574.9211304552.

The spelling of 190031157 in words is "one hundred ninety million, thirty-one thousand, one hundred fifty-seven".