31430133021437 has 2 divisors, whose sum is σ = 31430133021438. Its totient is φ = 31430133021436.

The previous prime is 31430133021403. The next prime is 31430133021457. The reversal of 31430133021437 is 73412033103413.

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., 30950907729316 + 479225292121 = 5563354^2 + 692261^2 .

It is a cyclic number.

It is not a de Polignac number, because 31430133021437 - 2¹² = 31430133017341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31430133021397 and 31430133021406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31430133021457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715066510718 + 15715066510719.

It is an arithmetic number, because the mean of its divisors is an integer number (15715066510719).

Almost surely, 2^{31430133021437} is an apocalyptic number.

It is an amenable number.

31430133021437 is a deficient number, since it is larger than the sum of its proper divisors (1).

31430133021437 is an equidigital number, since it uses as much as digits as its factorization.

31430133021437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 35.

The spelling of 31430133021437 in words is "thirty-one trillion, four hundred thirty billion, one hundred thirty-three million, twenty-one thousand, four hundred thirty-seven".