31343203155123 has 48 divisors (see below), whose sum is σ = 46080269944800. Its totient is φ = 20524099645440.

The previous prime is 31343203155109. The next prime is 31343203155127. The reversal of 31343203155123 is 32155130234313.

31343203155123 is a `hidden beast` number, since 3 + 1 + 3 + 4 + 320 + 315 + 5 + 12 + 3 = 666.

It is not a de Polignac number, because 31343203155123 - 2⁴ = 31343203155107 is a prime.

It is a super-2 number, since 2×31343203155123² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31343203155127) 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, 1497586323 + ... + 1497607251.

It is an arithmetic number, because the mean of its divisors is an integer number (960005623850).

Almost surely, 2^{31343203155123} is an apocalyptic number.

31343203155123 is a deficient number, since it is larger than the sum of its proper divisors (14737066789677).

31343203155123 is a wasteful number, since it uses less digits than its factorization.

31343203155123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24692 (or 24689 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

Adding to 31343203155123 its reverse (32155130234313), we get a palindrome (63498333389436).

The spelling of 31343203155123 in words is "thirty-one trillion, three hundred forty-three billion, two hundred three million, one hundred fifty-five thousand, one hundred twenty-three".