20120131319 has 2 divisors, whose sum is σ = 20120131320. Its totient is φ = 20120131318.

The previous prime is 20120131277. The next prime is 20120131327. The reversal of 20120131319 is 91313102102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120131319 is a prime.

It is a super-2 number, since 2×20120131319² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120131294 and 20120131303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120131379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060065659 + 10060065660.

It is an arithmetic number, because the mean of its divisors is an integer number (10060065660).

Almost surely, 2^20120131319 is an apocalyptic number.

20120131319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120131319 is an equidigital number, since it uses as much as digits as its factorization.

20120131319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 20120131319 in words is "twenty billion, one hundred twenty million, one hundred thirty-one thousand, three hundred nineteen".