1021145434431 has 16 divisors (see below), whose sum is σ = 1433218761600. Its totient is φ = 644919474528.

The previous prime is 1021145434367. The next prime is 1021145434447. The reversal of 1021145434431 is 1344345411201.

1021145434431 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 1021145434431 - 2⁶ = 1021145434367 is a prime.

It is a super-2 number, since 2×1021145434431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021145434392 and 1021145434401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021145434931) 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, 2730700 + ... + 3082046.

It is an arithmetic number, because the mean of its divisors is an integer number (89576172600).

Almost surely, 2^{1021145434431} is an apocalyptic number.

1021145434431 is a deficient number, since it is larger than the sum of its proper divisors (412073327169).

1021145434431 is a wasteful number, since it uses less digits than its factorization.

1021145434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402358.

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 1021145434431 in words is "one trillion, twenty-one billion, one hundred forty-five million, four hundred thirty-four thousand, four hundred thirty-one".