31402423103 has 4 divisors (see below), whose sum is σ = 33249624480. Its totient is φ = 29555221728.

The previous prime is 31402423099. The next prime is 31402423127. The reversal of 31402423103 is 30132420413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30132420413 = 103 ⋅292547771.

It is a cyclic number.

It is not a de Polignac number, because 31402423103 - 2² = 31402423099 is a prime.

It is a super-2 number, since 2×31402423103² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402423153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923600663 + ... + 923600696.

It is an arithmetic number, because the mean of its divisors is an integer number (8312406120).

Almost surely, 2^31402423103 is an apocalyptic number.

31402423103 is a deficient number, since it is larger than the sum of its proper divisors (1847201377).

31402423103 is a wasteful number, since it uses less digits than its factorization.

31402423103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847201376.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31402423103 its reverse (30132420413), we get a palindrome (61534843516).

The spelling of 31402423103 in words is "thirty-one billion, four hundred two million, four hundred twenty-three thousand, one hundred three".