20734131 has 16 divisors (see below), whose sum is σ = 30286080. Its totient is φ = 12513120.

The previous prime is 20734121. The next prime is 20734141. The reversal of 20734131 is 13143702.

It is an interprime number because it is at equal distance from previous prime (20734121) and next prime (20734141).

It is not a de Polignac number, because 20734131 - 2⁵ = 20734099 is a prime.

It is a super-2 number, since 2×20734131² = 859808376650322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20734098 and 20734107.

It is not an unprimeable number, because it can be changed into a prime (20734121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7485 + ... + 9873.

It is an arithmetic number, because the mean of its divisors is an integer number (1892880).

Almost surely, 2^20734131 is an apocalyptic number.

20734131 is a deficient number, since it is larger than the sum of its proper divisors (9551949).

20734131 is a wasteful number, since it uses less digits than its factorization.

20734131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20734131 is about 4553.4746073740. The cubic root of 20734131 is about 274.7231638332.

Adding to 20734131 its reverse (13143702), we get a palindrome (33877833).

The spelling of 20734131 in words is "twenty million, seven hundred thirty-four thousand, one hundred thirty-one".