1242303631 has 2 divisors, whose sum is σ = 1242303632. Its totient is φ = 1242303630.

The previous prime is 1242303607. The next prime is 1242303659. The reversal of 1242303631 is 1363032421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242303631 - 2¹¹ = 1242301583 is a prime.

It is a super-2 number, since 2×1242303631² = 3086636623191568322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1242303596 and 1242303605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242303691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621151815 + 621151816.

It is an arithmetic number, because the mean of its divisors is an integer number (621151816).

Almost surely, 2^1242303631 is an apocalyptic number.

1242303631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242303631 is an equidigital number, since it uses as much as digits as its factorization.

1242303631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 1242303631 is about 35246.3279080247. The cubic root of 1242303631 is about 1075.0019487255.

The spelling of 1242303631 in words is "one billion, two hundred forty-two million, three hundred three thousand, six hundred thirty-one".