20252131 has 2 divisors, whose sum is σ = 20252132. Its totient is φ = 20252130.

The previous prime is 20252107. The next prime is 20252137. The reversal of 20252131 is 13125202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20252131 - 2⁹ = 20251619 is a prime.

It is a super-2 number, since 2×20252131² = 820297620082322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20252137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10126065 + 10126066.

It is an arithmetic number, because the mean of its divisors is an integer number (10126066).

Almost surely, 2^20252131 is an apocalyptic number.

20252131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20252131 is an equidigital number, since it uses as much as digits as its factorization.

20252131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20252131 is about 4500.2367715488. The cubic root of 20252131 is about 272.5776497845.

Adding to 20252131 its reverse (13125202), we get a palindrome (33377333).

The spelling of 20252131 in words is "twenty million, two hundred fifty-two thousand, one hundred thirty-one".