31041510421 has 2 divisors, whose sum is σ = 31041510422. Its totient is φ = 31041510420.

The previous prime is 31041510403. The next prime is 31041510473. The reversal of 31041510421 is 12401514013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16644870225 + 14396640196 = 129015^2 + 119986^2 .

It is a cyclic number.

It is not a de Polignac number, because 31041510421 - 2¹³ = 31041502229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31041510392 and 31041510401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31041513421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15520755210 + 15520755211.

It is an arithmetic number, because the mean of its divisors is an integer number (15520755211).

Almost surely, 2^31041510421 is an apocalyptic number.

It is an amenable number.

31041510421 is a deficient number, since it is larger than the sum of its proper divisors (1).

31041510421 is an equidigital number, since it uses as much as digits as its factorization.

31041510421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The spelling of 31041510421 in words is "thirty-one billion, forty-one million, five hundred ten thousand, four hundred twenty-one".