1242031605331 has 12 divisors (see below), whose sum is σ = 1367534109816. Its totient is φ = 1127196033920.

The previous prime is 1242031605313. The next prime is 1242031605337. The reversal of 1242031605331 is 1335061302421.

It is not a de Polignac number, because 1242031605331 - 2⁹ = 1242031604819 is a prime.

It is a super-2 number, since 2×1242031605331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242031605293 and 1242031605302.

It is not an unprimeable number, because it can be changed into a prime (1242031605337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8672350 + ... + 8814403.

It is an arithmetic number, because the mean of its divisors is an integer number (113961175818).

Almost surely, 2^{1242031605331} is an apocalyptic number.

1242031605331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1242031605331 is a deficient number, since it is larger than the sum of its proper divisors (125502504485).

1242031605331 is a wasteful number, since it uses less digits than its factorization.

1242031605331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17487362 (or 17487351 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 1242031605331 its reverse (1335061302421), we get a palindrome (2577092907752).

The spelling of 1242031605331 in words is "one trillion, two hundred forty-two billion, thirty-one million, six hundred five thousand, three hundred thirty-one".