143031311031 has 16 divisors (see below), whose sum is σ = 221646585600. Its totient is φ = 80346885888.

The previous prime is 143031311009. The next prime is 143031311057. The reversal of 143031311031 is 130113130341.

143031311031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 143031311031 - 2¹⁵ = 143031278263 is a prime.

It is a super-2 number, since 2×143031311031² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 143031310989 and 143031311007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143031319031) 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 15 ways as a sum of consecutive naturals, for example, 57719226 + ... + 57721703.

It is an arithmetic number, because the mean of its divisors is an integer number (13852911600).

Almost surely, 2^143031311031 is an apocalyptic number.

143031311031 is a deficient number, since it is larger than the sum of its proper divisors (78615274569).

143031311031 is a wasteful number, since it uses less digits than its factorization.

143031311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115440998.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 143031311031 its reverse (130113130341), we get a palindrome (273144441372).

The spelling of 143031311031 in words is "one hundred forty-three billion, thirty-one million, three hundred eleven thousand, thirty-one".