311123406400245 has 48 divisors (see below), whose sum is σ = 562486607609472. Its totient is φ = 164973335999040.

The previous prime is 311123406400243. The next prime is 311123406400307. The reversal of 311123406400245 is 542004604321113.

311123406400245 is a `hidden beast` number, since 3 + 1 + 1 + 1 + 2 + 3 + 4 + 0 + 6 + 400 + 245 = 666.

It is not a de Polignac number, because 311123406400245 - 2¹ = 311123406400243 is a prime.

It is a super-2 number, since 2×311123406400245² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311123406400243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 739872601 + ... + 740292990.

It is an arithmetic number, because the mean of its divisors is an integer number (11718470991864).

Almost surely, 2^{311123406400245} is an apocalyptic number.

It is an amenable number.

311123406400245 is a deficient number, since it is larger than the sum of its proper divisors (251363201209227).

311123406400245 is a wasteful number, since it uses less digits than its factorization.

311123406400245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480165784 (or 1480165772 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 311123406400245 in words is "three hundred eleven trillion, one hundred twenty-three billion, four hundred six million, four hundred thousand, two hundred forty-five".