20313190 has 8 divisors (see below), whose sum is σ = 36563760. Its totient is φ = 8125272.

The previous prime is 20313143. The next prime is 20313197. The reversal of 20313190 is 9131302.

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

It is a super-2 number, since 2×20313190² = 825251375952200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313197) 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, 1015650 + ... + 1015669.

It is an arithmetic number, because the mean of its divisors is an integer number (4570470).

Almost surely, 2^20313190 is an apocalyptic number.

20313190 is a deficient number, since it is larger than the sum of its proper divisors (16250570).

20313190 is a wasteful number, since it uses less digits than its factorization.

20313190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031326.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 20313190 is about 4507.0156423070. The cubic root of 20313190 is about 272.8513102117.

Adding to 20313190 its reverse (9131302), we get a palindrome (29444492).

It can be divided in two parts, 20313 and 190, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 20313190 in words is "twenty million, three hundred thirteen thousand, one hundred ninety".