143715997 has 2 divisors, whose sum is σ = 143715998. Its totient is φ = 143715996.

The previous prime is 143715973. The next prime is 143716007. The reversal of 143715997 is 799517341.

143715997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78251716 + 65464281 = 8846^2 + 8091^2 .

It is a cyclic number.

It is not a de Polignac number, because 143715997 - 2¹⁹ = 143191709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143715197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71857998 + 71857999.

It is an arithmetic number, because the mean of its divisors is an integer number (71857999).

Almost surely, 2^143715997 is an apocalyptic number.

It is an amenable number.

143715997 is a deficient number, since it is larger than the sum of its proper divisors (1).

143715997 is an equidigital number, since it uses as much as digits as its factorization.

143715997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 46.

The square root of 143715997 is about 11988.1607012919. The cubic root of 143715997 is about 523.8034694587.

The spelling of 143715997 in words is "one hundred forty-three million, seven hundred fifteen thousand, nine hundred ninety-seven".