20277760031 has 2 divisors, whose sum is σ = 20277760032. Its totient is φ = 20277760030.

The previous prime is 20277759967. The next prime is 20277760037. The reversal of 20277760031 is 13006777202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20277760031 - 2⁶ = 20277759967 is a prime.

It is a super-2 number, since 2×20277760031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20277759973 and 20277760000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20277760037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10138880015 + 10138880016.

It is an arithmetic number, because the mean of its divisors is an integer number (10138880016).

Almost surely, 2^20277760031 is an apocalyptic number.

20277760031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20277760031 is an equidigital number, since it uses as much as digits as its factorization.

20277760031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 35.

The spelling of 20277760031 in words is "twenty billion, two hundred seventy-seven million, seven hundred sixty thousand, thirty-one".