1212023431 has 2 divisors, whose sum is σ = 1212023432. Its totient is φ = 1212023430.

The previous prime is 1212023411. The next prime is 1212023459. The reversal of 1212023431 is 1343202121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212023431 - 2²¹ = 1209926279 is a prime.

It is a super-2 number, since 2×1212023431² = 2938001594586023522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212023399 and 1212023408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212023411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606011715 + 606011716.

It is an arithmetic number, because the mean of its divisors is an integer number (606011716).

Almost surely, 2^1212023431 is an apocalyptic number.

1212023431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212023431 is an equidigital number, since it uses as much as digits as its factorization.

1212023431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1212023431 is about 34814.1268883768. The cubic root of 1212023431 is about 1066.1958929163.

Adding to 1212023431 its reverse (1343202121), we get a palindrome (2555225552).

The spelling of 1212023431 in words is "one billion, two hundred twelve million, twenty-three thousand, four hundred thirty-one".