31203154023 has 4 divisors (see below), whose sum is σ = 41604205368. Its totient is φ = 20802102680.

The previous prime is 31203154001. The next prime is 31203154049. The reversal of 31203154023 is 32045130213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31203154023 - 2⁵ = 31203153991 is a prime.

It is a super-2 number, since 2×31203154023² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31203153984 and 31203154002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203154063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5200525668 + ... + 5200525673.

It is an arithmetic number, because the mean of its divisors is an integer number (10401051342).

Almost surely, 2^31203154023 is an apocalyptic number.

31203154023 is a deficient number, since it is larger than the sum of its proper divisors (10401051345).

31203154023 is a wasteful number, since it uses less digits than its factorization.

31203154023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10401051344.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 31203154023 its reverse (32045130213), we get a palindrome (63248284236).

The spelling of 31203154023 in words is "thirty-one billion, two hundred three million, one hundred fifty-four thousand, twenty-three".