145234211731 has 8 divisors (see below), whose sum is σ = 168795210240. Its totient is φ = 122376526728.

The previous prime is 145234211719. The next prime is 145234211741. The reversal of 145234211731 is 137112432541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145234211731 - 2⁹ = 145234211219 is a prime.

It is a super-2 number, since 2×145234211731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145234211711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175827931 + ... + 175828756.

It is an arithmetic number, because the mean of its divisors is an integer number (21099401280).

Almost surely, 2^145234211731 is an apocalyptic number.

145234211731 is a deficient number, since it is larger than the sum of its proper divisors (23560998509).

145234211731 is an equidigital number, since it uses as much as digits as its factorization.

145234211731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351656753.

The product of its digits is 20160, while the sum is 34.

The spelling of 145234211731 in words is "one hundred forty-five billion, two hundred thirty-four million, two hundred eleven thousand, seven hundred thirty-one".