20213310131 has 32 divisors (see below), whose sum is σ = 24920275968. Its totient is φ = 16002201600.

The previous prime is 20213310121. The next prime is 20213310157. The reversal of 20213310131 is 13101331202.

It is not a de Polignac number, because 20213310131 - 2⁶ = 20213310067 is a prime.

It is a super-2 number, since 2×20213310131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (20213310101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1484651 + ... + 1498203.

It is an arithmetic number, because the mean of its divisors is an integer number (778758624).

Almost surely, 2^20213310131 is an apocalyptic number.

20213310131 is a deficient number, since it is larger than the sum of its proper divisors (4706965837).

20213310131 is a wasteful number, since it uses less digits than its factorization.

20213310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13811.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20213310131 its reverse (13101331202), we get a palindrome (33314641333).

The spelling of 20213310131 in words is "twenty billion, two hundred thirteen million, three hundred ten thousand, one hundred thirty-one".