1237231906541 has 2 divisors, whose sum is σ = 1237231906542. Its totient is φ = 1237231906540.

The previous prime is 1237231906529. The next prime is 1237231906577. The reversal of 1237231906541 is 1456091327321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1231644942025 + 5586964516 = 1109795^2 + 74746^2 .

It is a cyclic number.

It is not a de Polignac number, because 1237231906541 - 2³⁸ = 962353999597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1237231906492 and 1237231906501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1237231906511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618615953270 + 618615953271.

It is an arithmetic number, because the mean of its divisors is an integer number (618615953271).

Almost surely, 2^{1237231906541} is an apocalyptic number.

It is an amenable number.

1237231906541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1237231906541 is an equidigital number, since it uses as much as digits as its factorization.

1237231906541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 1237231906541 in words is "one trillion, two hundred thirty-seven billion, two hundred thirty-one million, nine hundred six thousand, five hundred forty-one".