161431111070 has 32 divisors (see below), whose sum is σ = 307821148128. Its totient is φ = 60743953408.

The previous prime is 161431111069. The next prime is 161431111099. The reversal of 161431111070 is 70111134161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110354 + ... + 578826.

It is an arithmetic number, because the mean of its divisors is an integer number (9619410879).

Almost surely, 2^161431111070 is an apocalyptic number.

161431111070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161431111070 is a deficient number, since it is larger than the sum of its proper divisors (146390037058).

161431111070 is a wasteful number, since it uses less digits than its factorization.

161431111070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470524.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 161431111070 in words is "one hundred sixty-one billion, four hundred thirty-one million, one hundred eleven thousand, seventy".