1023151258 has 4 divisors (see below), whose sum is σ = 1534726890. Its totient is φ = 511575628.

The previous prime is 1023151219. The next prime is 1023151277. The reversal of 1023151258 is 8521513201.

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

It can be written as a sum of positive squares in only one way, i.e., 1017163449 + 5987809 = 31893^2 + 2447^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255787813 + ... + 255787816.

Almost surely, 2^1023151258 is an apocalyptic number.

1023151258 is a deficient number, since it is larger than the sum of its proper divisors (511575632).

1023151258 is an equidigital number, since it uses as much as digits as its factorization.

1023151258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511575631.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 1023151258 is about 31986.7356571439. The cubic root of 1023151258 is about 1007.6582869235.

Adding to 1023151258 its reverse (8521513201), we get a palindrome (9544664459).

The spelling of 1023151258 in words is "one billion, twenty-three million, one hundred fifty-one thousand, two hundred fifty-eight".