10694021231 has 2 divisors, whose sum is σ = 10694021232. Its totient is φ = 10694021230.

The previous prime is 10694021209. The next prime is 10694021251. The reversal of 10694021231 is 13212049601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10694021231 is a prime.

It is a super-2 number, since 2×10694021231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10694021194 and 10694021203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10694021251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5347010615 + 5347010616.

It is an arithmetic number, because the mean of its divisors is an integer number (5347010616).

Almost surely, 2^10694021231 is an apocalyptic number.

10694021231 is a deficient number, since it is larger than the sum of its proper divisors (1).

10694021231 is an equidigital number, since it uses as much as digits as its factorization.

10694021231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 10694021231 in words is "ten billion, six hundred ninety-four million, twenty-one thousand, two hundred thirty-one".