143021431221031 has 64 divisors (see below), whose sum is σ = 167099078615040. Its totient is φ = 120971565711360.

The previous prime is 143021431221029. The next prime is 143021431221047. The reversal of 143021431221031 is 130122134120341.

It is a cyclic number.

It is not a de Polignac number, because 143021431221031 - 2¹ = 143021431221029 is a prime.

It is a super-2 number, since 2×143021431221031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143021431221061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13382742970 + ... + 13382753656.

It is an arithmetic number, because the mean of its divisors is an integer number (2610923103360).

Almost surely, 2^{143021431221031} is an apocalyptic number.

143021431221031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

143021431221031 is a deficient number, since it is larger than the sum of its proper divisors (24077647394009).

143021431221031 is a wasteful number, since it uses less digits than its factorization.

143021431221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12424.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 143021431221031 its reverse (130122134120341), we get a palindrome (273143565341372).

The spelling of 143021431221031 in words is "one hundred forty-three trillion, twenty-one billion, four hundred thirty-one million, two hundred twenty-one thousand, thirty-one".