20153013 has 4 divisors (see below), whose sum is σ = 26870688. Its totient is φ = 13435340.

The previous prime is 20153009. The next prime is 20153027. The reversal of 20153013 is 31035102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20153013 - 2² = 20153009 is a prime.

It is a super-2 number, since 2×20153013² = 812287865956338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20152983 and 20153001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153033) 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, 3358833 + ... + 3358838.

It is an arithmetic number, because the mean of its divisors is an integer number (6717672).

Almost surely, 2^20153013 is an apocalyptic number.

It is an amenable number.

20153013 is a deficient number, since it is larger than the sum of its proper divisors (6717675).

20153013 is an equidigital number, since it uses as much as digits as its factorization.

20153013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717674.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 20153013 is about 4489.2107324117. The cubic root of 20153013 is about 272.1322390794.

Adding to 20153013 its reverse (31035102), we get a palindrome (51188115).

The spelling of 20153013 in words is "twenty million, one hundred fifty-three thousand, thirteen".