54642031313 has 2 divisors, whose sum is σ = 54642031314. Its totient is φ = 54642031312.

The previous prime is 54642031291. The next prime is 54642031331. The reversal of 54642031313 is 31313024645.

Together with next prime (54642031331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40766840464 + 13875190849 = 201908^2 + 117793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54642031313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54642031313.

It is not a weakly prime, because it can be changed into another prime (54642031373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27321015656 + 27321015657.

It is an arithmetic number, because the mean of its divisors is an integer number (27321015657).

Almost surely, 2^54642031313 is an apocalyptic number.

It is an amenable number.

54642031313 is a deficient number, since it is larger than the sum of its proper divisors (1).

54642031313 is an equidigital number, since it uses as much as digits as its factorization.

54642031313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 54642031313 its reverse (31313024645), we get a palindrome (85955055958).

The spelling of 54642031313 in words is "fifty-four billion, six hundred forty-two million, thirty-one thousand, three hundred thirteen".