31124144449 has 2 divisors, whose sum is σ = 31124144450. Its totient is φ = 31124144448.

The previous prime is 31124144413. The next prime is 31124144461. The reversal of 31124144449 is 94444142113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27611804224 + 3512340225 = 166168^2 + 59265^2 .

It is a cyclic number.

It is not a de Polignac number, because 31124144449 - 2¹³ = 31124136257 is a prime.

It is not a weakly prime, because it can be changed into another prime (31124144489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15562072224 + 15562072225.

It is an arithmetic number, because the mean of its divisors is an integer number (15562072225).

Almost surely, 2^31124144449 is an apocalyptic number.

It is an amenable number.

31124144449 is a deficient number, since it is larger than the sum of its proper divisors (1).

31124144449 is an equidigital number, since it uses as much as digits as its factorization.

31124144449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 37.

The spelling of 31124144449 in words is "thirty-one billion, one hundred twenty-four million, one hundred forty-four thousand, four hundred forty-nine".