1023081951 has 4 divisors (see below), whose sum is σ = 1364109272. Its totient is φ = 682054632.

The previous prime is 1023081881. The next prime is 1023082009. The reversal of 1023081951 is 1591803201.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1023081951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023081151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170513656 + ... + 170513661.

It is an arithmetic number, because the mean of its divisors is an integer number (341027318).

Almost surely, 2^1023081951 is an apocalyptic number.

1023081951 is a deficient number, since it is larger than the sum of its proper divisors (341027321).

1023081951 is an equidigital number, since it uses as much as digits as its factorization.

1023081951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341027320.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1023081951 is about 31985.6522678528. The cubic root of 1023081951 is about 1007.6355339013.

The spelling of 1023081951 in words is "one billion, twenty-three million, eighty-one thousand, nine hundred fifty-one".