12031012057 has 2 divisors, whose sum is σ = 12031012058. Its totient is φ = 12031012056.

The previous prime is 12031012043. The next prime is 12031012061. The reversal of 12031012057 is 75021013021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11496986176 + 534025881 = 107224^2 + 23109^2 .

It is an emirp because it is prime and its reverse (75021013021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12031012057 - 2²³ = 12022623449 is a prime.

It is a super-2 number, since 2×12031012057² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12031012027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015506028 + 6015506029.

It is an arithmetic number, because the mean of its divisors is an integer number (6015506029).

Almost surely, 2^12031012057 is an apocalyptic number.

It is an amenable number.

12031012057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031012057 is an equidigital number, since it uses as much as digits as its factorization.

12031012057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

Adding to 12031012057 its reverse (75021013021), we get a palindrome (87052025078).

The spelling of 12031012057 in words is "twelve billion, thirty-one million, twelve thousand, fifty-seven".