203012310112331 has 16 divisors (see below), whose sum is σ = 224339104687104. Its totient is φ = 182731174775424.

The previous prime is 203012310112303. The next prime is 203012310112343. The reversal of 203012310112331 is 133211013210302.

It is not a de Polignac number, because 203012310112331 - 2⁴² = 198614263601227 is a prime.

It is a super-2 number, since 2×203012310112331² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203012310112297 and 203012310112306.

It is not an unprimeable number, because it can be changed into a prime (203012310912331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42958481 + ... + 47449506.

It is an arithmetic number, because the mean of its divisors is an integer number (14021194042944).

Almost surely, 2^{203012310112331} is an apocalyptic number.

203012310112331 is a deficient number, since it is larger than the sum of its proper divisors (21326794574773).

203012310112331 is a wasteful number, since it uses less digits than its factorization.

203012310112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90413770.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 203012310112331 its reverse (133211013210302), we get a palindrome (336223323322633).

The spelling of 203012310112331 in words is "two hundred three trillion, twelve billion, three hundred ten million, one hundred twelve thousand, three hundred thirty-one".