1420243931 has 2 divisors, whose sum is σ = 1420243932. Its totient is φ = 1420243930.

The previous prime is 1420243919. The next prime is 1420243943. The reversal of 1420243931 is 1393420241.

It is a balanced prime because it is at equal distance from previous prime (1420243919) and next prime (1420243943).

It is an emirp because it is prime and its reverse (1393420241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1420243931 - 2²² = 1416049627 is a prime.

It is a super-2 number, since 2×1420243931² = 4034185647084665522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1420243894 and 1420243903.

It is not a weakly prime, because it can be changed into another prime (1420243991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710121965 + 710121966.

It is an arithmetic number, because the mean of its divisors is an integer number (710121966).

Almost surely, 2^1420243931 is an apocalyptic number.

1420243931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420243931 is an equidigital number, since it uses as much as digits as its factorization.

1420243931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1420243931 is about 37686.1238521555. The cubic root of 1420243931 is about 1124.0552215432.

The spelling of 1420243931 in words is "one billion, four hundred twenty million, two hundred forty-three thousand, nine hundred thirty-one".