31149029 has 2 divisors, whose sum is σ = 31149030. Its totient is φ = 31149028.

The previous prime is 31149023. The next prime is 31149059. The reversal of 31149029 is 92094113.

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., 22137025 + 9012004 = 4705^2 + 3002^2 .

It is a cyclic number.

It is not a de Polignac number, because 31149029 - 2⁸ = 31148773 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31148992 and 31149010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31149023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15574514 + 15574515.

It is an arithmetic number, because the mean of its divisors is an integer number (15574515).

Almost surely, 2^31149029 is an apocalyptic number.

It is an amenable number.

31149029 is a deficient number, since it is larger than the sum of its proper divisors (1).

31149029 is an equidigital number, since it uses as much as digits as its factorization.

31149029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 31149029 is about 5581.1315160996. The cubic root of 31149029 is about 314.6406551432.

The spelling of 31149029 in words is "thirty-one million, one hundred forty-nine thousand, twenty-nine".